Audio research sp15

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Other suggestions welcome. Item is in very good excellent condition. The main body and power supply are designed separately. This category only includes cookies that ensures basic functionalities and security features of the website. Fellow Gear Fans, I have the opportunity to purchase an SP17 in very good condition, gone over on a bench, for around $1,700. com. I've disconnected the output of the phono amplifier (R30) from Audio-gd HE-1 MK2 Class A Preamp & Shunyata Research Zitron Cobra Power Cable. The Audio Research SP15 was introduced to the world in 1988 and is a full functioning Pre-Amplifier with Inbuilt Phono Stage. Product: Audio Research SP15 Vintage Stereo Tube Preamplifier; w/ Power Supply; MM Phono. $2,395. SP-10. TriangleART Reference Tube Line-Stage. Plug 3-prong powerline cord from rear of SP16 into grounded AC wall receptacle. Have a nice Day! See related repair forum topics Audio Research SP-3 preamplifier. (Incidentally, there have never been -2, -3 or -4 versions as reported by at least one "underground" magazine. Audio Research audio research H I G H D E F I N I T I O N® 3900 ANNAPOLIS LANE NORTH / PLYMOUTH, MINNESOTA 55447-5447 / PHONE 763-577-9700 FAX 763-577 0323 Schematics Included: 7-1-81 7-1-83 4-4-84 SP-8 PREAMPLIFIER OWNER 1 S MANUAL (All Versions) Audio Research SP16 Preamplifier Price: $1995 USD, phono stage adds $500. There was a review of the 9-14-15 set and they waxed poetic about each one doing them in order. Audio Research Corporation (ARC), SP15 Preamplifier The flagship Audio Research Corporation, ARC SP15 Preamplifier (the ARC SP-15), Originally Retailing for $ 5,995. 01% at 2V output. Photos: Top is the Audio Research SP10 and next is ARC SP15. REVIEW. 8). You will see this feature appear on future models from Audio Research as well. Dec 23, 2022. Greater bandwidth is offered with no Audio Research SP-15. There is a 12-Volt trigger, full remote control, and a removable 15A IEC power cord. Info: Audio Research SP-15 (SP15) Payment method: Cash, Paypal, Money Order, Money Wire: Apr 6, 2012 · Joined 2007. Free Shipping. This week Tom Martin discusses the Audio Research SP-3a, his pilgrimage to Transcendental Audio, and the legacy the SP-3A left in its wake as it pioneered and pushed the hi-fi boundary. May 1, 2016 · Apr 30, 2016. I love tube gear. The SP-8 from Audio Research is a highly musical vacuum tube stereo preamplifier which represents the current state-of-the-art of this technology. 1 votes. Different model lines, too. AR has a fantastic reputation for sonic excellence, customer support, and - probably most important for me - this preamp Feb 10, 2015 · Feb 10, 2015. $2,089. Congratulations on your and designed for audio. One of the few modern (relatively speaking. It has seven levels of voltage regulation, and its line and phono stages each include low-noise JFET inputs and two 6H30 output tubes. The SP-5 is a beast. J. Item #649798472. They are available on the used market at very affordable (by 2020 standards) of about $700. . Bill continued to focus on his mission to offer new products driven by their musical performance as opposed to market-driven features. Audio Research Corporation 3900 Annapolis Lane North Plymouth, Minnesota 55447 Phone: (763) 577-9700 Fax: (763) 577-0323. The SP9 Mk. com Audio Research SP15 Vintage Stereo Tube Hybrid Preamplifier for sale. Mar 1, 2011 · The Audio Research SP-7 was an odd duck - it's solid-state and is historically sandwiched between the famed SP-6 and SP-8 tubed preamplifiers. This is the 7 pages manual for audio research sp 15 schematic. Although the SP9 contains an on-board power supply (as opposed to the SP11's isolated supply), it is a highly advanced, tightly regulated design employing a shielded toroidal power transformer to minimize any potential 749. NEXT: Page 2 ». Going to use this thread as a documentary for all of the stuff, info, rebuilds, and modifications that I'll be doing to my recently acquired ARC SP-3. circuitry provides unequaled performance under actual. Audio Research SP14 preamplifier Specifications. 07-07-2016 at 03:09pm. Excellent condition, with remote. 3dB (RIAA phono), 5Hz–50kHz ±0. I do notice that the the remote seems to increase 1 light level which equates to multiple steps at a time whereas the control on the unit increases 1 step at a time. Audio Research SP17 previo de línea + phono. Late 70’s Early 80’s and 90’s. Cosmetic Description: 7/10 Very good cosmetic condition with some minor visible cosmetic wear including some light scuffing on knobs and on top of the unit. The difference in sound from before is quite significant! The Audio Research Database (ARCDB) provides information about past and present products from ARC SP-1. I have used an Audio Research SP8 since 1985 and an SP10 since 1987. Comparison with our more expensive units will Secure all rear-panel connections between SP16, power amplifier(s) and input sources. Sometimes the unit operates properly, but when I change the position of the input selector from line to phono, it oscillates strongly at a very low frequency. Necessary cookies are absolutely essential for the website to function properly. There are a number of SP-9 owners, maybe an SP-14 owner or two and these preamps are in the same era as the SP-15. The rumors were confirmed when ARC showed a black-and-white photo of the SP9 at the 1987 Winter CES. Pink Fish Media - Jun 11, 2024. € 1. COMPANY INFO. Different value capacitors can be installed to match the re quirements of your moving magnet cartridge. West Hollywood, CA, United States. The SP11 is quite refined and does several things really Oct 18, 2023 · The Audio Research SP15 was introduced to the world in 1988 and is a full functioning Pre-Amplifier with Inbuilt Phono Stage. Detailed, neutral and involving sound, maybe not as dynamic as the old SP-10's and SP-11's which were stupendous. For sale is an Audio Research SP15 hybrid preamplifier with its external SP15S power supply in very good condition. It is a Two-chassis hybrid tube/FET stereo preamplifier, that is beautifully built and gorgeous sounding,. It was 1978 when, after the release of two solid state pre, SP4 and SP5, the American manufacturer decided to go back to its origins by producing what is the first entirely tube preamplifier of the new course of the historic brand. Vintage Audio Research SP-6 Tube Preamplifier - AR SP6C-1 Preamp w/ Original Box Fully tested and 100% functional; this classic tube preamp is a great addition to any home hi-fi system. Hi everybody, I have a SP15 defective in the phono stage: hard noises are heard in the speakers. Output impedanceLess than 4000 ohms main output and tape output from phono. I'd make an argument the SP-11 belongs on that list. Jun 2, 2014 · The result is the SP20 ($9000), a fully balanced, pure class-A preamplifier that uses no overall loop negative feedback. The SP-4 stereo preamplifier was conceived and designed for audio perfectionists . Jan 4, 2009 · Suffice it to say, audio memory ain't all that reliable, but I would suggest that the SP16 leapfrogs backwards, over the SP9, SP14 and SP15 to Johnson's greatest achievements: the SP10 and SP11. Other than R9 the boards are marked correctly as I recall. ¥ 1,250,000 (around 1990) Commentary. SP-12. Audio Research was looking to expand their market share and offer something to the solid-state aficionado. SP-4. Aug 24, 2004 · 5 posts. 00, Occupies A Solid Market Niche, with strong competition from both This Country and abroad. Back in 1971, Audio Research introduced the SP-3 vacuum tube preamplifier. 79 5% off. 23 Days Left. INTRODUCTION. Serial Number: 98342042 (Preamplifier), 18443091 (Power Supply) Voltage: 120V. Price: MODEL SPII PREAMPLIFIER OWNERIS MANUAL 10-1-86 $5. Increased to $2,995 on January 1st 2007. The SP-4 has increased musical depth and definition with a smoothness that will satisfy any vacuum tube enthusiast. Cosmetic Description: 8/10 Very good condition with minimal visible cosmetic wear including a couple small nicks on the right handle of the power supply and few Nov 29, 2010 · The last Audio Research product to grace the pages of Stereophile was the original SP9 preamp, which got a rather lukewarm review at the hands of both J. Each active stage is a combination of a triode tube and a FET—devices whose dynamic transfer (input/output) characteristics just happen to be very close to complementary. This Audio Research SP-10 mk2 is a classic tube preamp much like the Marantz 7 or McIntosh C-22 and it will retain its value and increase over time as these 3 preamps are regarded as the Top 3 Best Classic Preamp’s of all time! On to the Specs: The layout is a dual mono design and it’s also designed to accept most moving coil cartridges direct. The SP-15 uses FET for most circuits, but the phono equalizer stage uses three twin triode 6DJ8 tubes to achieve high input resistance and high sound quality. It wasn't very long until it, and later versions (SP-3A, SP-3A-1), were acclaimed by most reviewers as the best available sounding preamplifier, although some had a few "nit picks" about the volume control, etc. The SP-14 is a fine preamp with an excellent phono stage. Dec 23, 2022 · Hifi History: The Classic, Tube-tastic Audio Research SP-3A Preamplifier. Warranty: Three years parts and labor. Dec 19, 2023 · Policies. please see specifications and reviews online. SP15 Revision A amplifier pdf manual download. Audio Research is one manufacturer whose gear I have imagined in my system since I was a teen. $110 price drop. #2. PRODUCT INFORMATION. It is also truly responsible for the advancement of audio technology. Following the success of the SP-3, and amplifiers like the D-150, Audio Research was able to grow both in terms of size and product offerings. Sp-10 problems Hello hobbit, I have built a couple of these regulators in the past few yeas and they work very well. Not as extended at top or bottom either. Add to Cart. conceived perfectionists. None of my speaks are particularly efficient. Free shipping. Sarver, PA, United States. 00 audio research cornration 6801 SHINGLE CREEK PARKWAY MINNEAPOLIS, MINNESOTA 55430. Rated outputs 2V RMS all outputs into 60K ohm loads (Main Nov 19, 2018 · Audio Research SP-5. Perfect condition Audio Research SP9MKII hybrid preamp Canuck Audio Mart CA$2,000 Sep 26, 2023. Huntington Beach, CA, United States. is this worth $3200 plus shipping on Ebay And Reverb. Product: Audio Research SP15 Vintage Stereo Tube Hybrid Preamplifier; SP15PS; MM PhonoProduct SKU: 36585Serial Number: 98342002 (preamplifier), 9834013 (power supply)Voltage: 120VCosmetic Descripti Price Drop. Solid state. View and Download Audio Research SP-12 owner's manual online. Recommended minimum load for maximum audio quality 60K ohms and 300 pF maximum capacitance. The complete MKII changes are available to original LS25 owners as a factory update. However, it was clearly pricey, so Audio Research opted to scale down the technology to a single-box chassis that was more inexpensive. That's a word that gets thrown around in audio circles a lot. , there's a defining group of products that are nearly synonymous with their makers and the course of high-end history. Nov 29, 1995 · Audio Research SP9 preamplifier. May 5, 2012. Plymouth, MN 55447-5447. A. Distortion: less than 0. Oct 29, 2013 · Mapman, I had an Audio Research SP15, which I really liked a lot, but I had a hankering, to go the Spectral route and I have never regretted it. Audio Research SP-15 preamplifier and SP-15PS power supply The Audio Research SP15 was introduced to the world in 1988 and is a full functioning pre-amplifier with inbuilt phono stage. The Audio Research SP-15 is a phono preamplifier designed for audiophiles who demand the highest level of sound quality from their vinyl playback system. 11Analog Module". AUDIO RESEARCH SP6a. Phono equalization accurate to within 0. I forget about the equipment and just follow whatever instrument or voice I want to. There is a little minor wear up top but the face is very clean. The SP9 MKIII has a total input capacitance of 600 picofarrads with the 560 picofarrad capaciators in stalled and 40 picofarrads without them. Product code: USPR0042. This is the A-1 model that retailed for $795 in 1975. I was hooked and have yet to recover. 11Analog Module 11 circuitry provides unequaled performance under actual dynamic listening conditions . Back in the mid 1970s, the idea that a preamplifier could provide “straight wire with gain” was an elusive goal. In addition to the normal complement of features, the SP-4 has: provisions for an optional (*) low Dec 29, 2018 · Been doing my homework on them before pulling trigger. Apr 15, 2001 · 1,004 posts. 75. Product: Audio Research SP15 Vintage Stereo Tube Hybrid Preamplifier; SP15PS; MM Phono. #21. There are two sets of Main single-ended outputs, plus a Tape (monitor) out. The hybrid SP9 Mk. There are a couple mistakes on the schematics/parts list for the regulator and the preamp. . The preamp has a high pitch squeal coming out of both channels. Our tech has gone through and confirmed this preamp is in perfect working condition. Oct 15, 2007 · Audio Research SP10, SP8, and SP15. New 6H30 tubes with damping rings are included. $1,299. 5. Apr 5, 2022 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Audio Research Jul 16, 2023 · Jul 18, 2023. #11. Audio Research SP14 Hybrid Preamplifier with Phono Stage Audio Emotion £990 Jun 14, 2024. Price Drop. 5740 GREEN CIRCLE DRIVE/ MINNETONKA, MINNESOTA 55343-4424 PHONE 612/939-0600 FAX 612/939-0604. Nov 12, 2023 · Audio Research SP-10 Tube Preamp 220-240V Canuck Audio Mart CA$4,500 Jun 9, 2024. The SP-10 is not only regarded as a state-of-the-art preamplifier. Préampli AUDIO RESEARCH SP14 Phono inclus Vintage Révisé Club Hifi - Mar 30, 2024. 04-16-2001 at 12:46pm. What are the specs for the Audio Research SP15 + SP15PS? Frequency Response: The SP-12 is a musically accurate, High Definition® wide bandwidth, vacuum tube preamplifier offering the serious music enthusiast uncompromised performance. SP View and Download Audio Research SP15 Revision A owner's manual online. I saw there were mixed tubes in there so I installed NOS rca tubes. The phono stage provides 58dB of gain, which makes it compatible with most low-output MC Apr 6, 2012 · My SP10 is perfectly working now. Front handles (for units shipped before January 1st 2007). 2014-04-02 9:35 pm. Yet when the $595 SP-3 preamplifier arrived on the scene in 1972, many audio reviewers proclaimed Nov 11, 2008 · 21,925 posts. Advertisement. Audio Research SP14 Vorstufe Kleinanzeigen €1,300 13% Nov 17, 2023. The SP-5 stereo preamplifier was. Audio Research LS-3 Preamp Black. NOTE: At the performance level of the SP9, high-quality audio signal interconnect cables are critical to preserving maximum fidelity. For years the brand has been recognized by audiophiles throughout the world as equipment that delivers clear and consistent quality in music. Whether talking about the Linn LP12, Levinson ML2s, original Quads, etc. Cosmetic Description: 8/10 Excellent condition with minimal visible cosmetic wear including a few tiny nicks on the top edge of the front faceplate, a few About This Listing. Availability: no. May 5, 2012 · Waiting for Vintage Gear from this century. ) ARC preamps that holds to the more traditional ARC design philosophy is the SP16. Cosmetically there are some signs of use along the top edges of both pieces, and some scratches on the sides that can be seen in the The SP11 was a watershed event for the Minneapolis company, with well-healed audiophiles flocking to it. SP-2. 99. $228. Jun 29, 2016 · 4,867 posts. Beaudoind is right, the SP series have phono stages, and the LS series are line level preamps only. As for the model numbers, well, the higher numbers are the most recent but not necessarily the best ARC has/had to offer. He would experiment from time Jun 10, 1995 · The SP-11 is a design departure for Audio Research. Audio Research SP11 MKII Tube Preamplifier US Audio Mart $3,950 17% Apr 15, 2024. Most of the essential features of a stereo control preamplifier have been retained, while component and construction quality typical of Audio Research has been fully retained. Audio Research SP-8 Preamplifier. I had the SP-14 in the system for a number of years before moving up to the REF-3. A tube guru I know told me that the tubes were oscillating and that 1K grid stoppers directly soldered on the sockets would be needed. jj77 02-07-2024 10:27pm. 10 No. Read or download the pdf for free. Product: Audio Research SP15 Stereo Tube Hybrid Preamplifier; SP-15. Increased to $2,495 on January 1st 2007. Location: Nevada. These are somewhat overly warm but detailed preamplifiers that are wonderfully accurate on voices and most instruments. Audio Research. I added grid stoppers to the first pair of tube near the input. The v. #1. There are 6 tubes - all have the brand Jul 31, 2022 · Jul 31, 2022. An updated ARC driver is currently in development and testing. Audio Research's first 21st-century, audiophile-quality line-stage preamplifier combines retro-tech vacuum-tube amplification and power-supply circuitry with innovative, remote-controlled gain, balance, tape monitoring, and signal routing. Like your SP-3, my SP-3 was also upgraded to the A-1 version by Audio Research. Providing sonic accuracy and the finest in craftsmanship, the SP-8 is moderately priced making it an excellent value to the audio perfectionist. Audio Research SP 15 / SPS 15 Preamplifier (RARE, ABSOLUTELY MINT CONDITION)Here is a one owner, pristine example of the Audio Research SP 15 / SPS 15 Preamplifier. When the SP-9 was current there was also the 2x priced SP-14 and the 2x priced again SP-15 with two chassis. 5dB (line). The 9 was great, but the 14 was worth twice as much and we even greater. For this no need registration. Audio Research SP 14 preamplifier Canuck Audio Mart CA$1,700 May 9, 2024. After an absence of many years I am looking to get back into the stereo game again. The price is also 21st-century: $9995. Description. Nov 26, 2021 · WANTED: Audio Research SP-15 (SP15) Watch Report This Ad. Congratulations on your purchase. Hybrid design. purchase. I had oscillation from the E88CC (6DJ8) tubes. Specifications: Frequency response: 30Hz–40kHz ±0. Audio Research is one of the most dependable brand names when it comes to high-end audio systems. ) Turn Power switch to “on”. Preamplifier (17 pages) Amplifier Audio Research SP17 Manual (8 pages) Related Products for Audio Research SP4. I have an Audio Research SP-5 and SP-8. Serial Number: 90042005 (preamplifier), 90043002 (power supply) Voltage: 120V. Product SKU: 16979. Audio Research Reference Two preamplifier. Yet, it allows effortless listening to the music, never drawing attention to itself. As can be seen from the pictures (to the left) the SP15 is constructed on two chassis, utilizing aircraft-quality connectors and an interconnect cable forty The SP-4 will be a delight to those enthusiasts that have followed the evolution of Audio Research products. Mine has the brushed aluminum front panel with the control sections only outlined in black (without the large blackened areas of the front panel that your unit has), but otherwise is identical. Each better than the last. They take 5 6DJ8, the high pitch squeal went away but there is like a windy low hiss thats coming from the right channel. Website: www. SP-6. Audio Research LS22 - Tube Stereo Preamplifier w/ Phono - Black. I'd appreciate any comments, pros or cons. Audio Research SP15 Review by James Leahy. August 1977. The SP-10 will remain the strongest link in many state- of-the-art audio systems for years to come. The matching DAC-2 is not part of thi $1,399. Incorporating all the latest advances in AUDIO RESEARCH SP-15 SP15 SP 15; If you have any question about repairing write your question to the Message board. Most of the SP series do not have remote control capability, whereas the LS products do. Trying to keep my budget to $1,000-$1,500 and looking at the Conrad Johnson Classic 2 (tube) or the ARC SP-5 (SS). SP-5. Following the introduction of their very expensive, tube/FET hybrid SP11 preamplifier, there were rumors that Audio Research was working on a hybrid tube/transistor preamplifier targeted to cost less than $2000. (763) 577-9700. I found the SP-5 at a charity auction and decided to keep the best of my 3 preamps (the other one is a Conrad Johnson PV-2), fully expecting it be the SP-8 because it’s tube based and has so many rave reviews. Comes with attached power cord and factory packaging. Not a lot going on, which is probably why it sounds so darned good. Dec 22, 1998 · Control and switching facilities less versatile than on some competitively priced preamps. Used – Excellent. EMI/RFI filtering: The SP-15 employs advanced circuitry to reject electromagnetic interference (EMI) and radio frequency interference (RFI) that can Mar 2, 2019 · eflatminor Forum Resident. The earlier Audio Research hybrids I find hard, dry, and lifeless and in my vierw the worst components ever made by ARC were the SP9/I and the D125 amplifier. The SP17 is completely single-ended with five sets of inputs (labeled Phono, CD, Tuner, Video and Aux), plus a Processor (unity-gain) pass-through. Control amplifier with separate structure. This item has some Oct 16, 2007 · The SP11/II I would still prefer to the SP15 and again it may be due in part to the SP11 having 6- E88CC and the SP15 having 3. Both have the power supply in a separate chassis. Préamplificateur à Tube Audio Research SP17 ON-mag €1,700 Apr 23, 2024. Volume steps not an issue. SP-12 amplifier pdf manual download. II uses two 6DJ8 tubes, one in the phono stage and one in the line section, each ringed with tube dampers, like the solitary 6DJ8 in the ARC SP14. #5. The SP9 ($1,695 in its home market) was introduced in June 1987 and offered incredible value. Audio research sp 15 schematic. Brand New. SP-3. Gordon Holt and John Atkinson (Vol. 4 USB card driver will support the following ARC Products: Operating Systems Supported: If you have an older ARC product with an older USB card or are unsure which USB card you have, please contact our Service Department at 1-763-577-9700 or by email at. Hall Research SP-HD-2B 2-Ch HDMI Splitter with Analog and Optical Audio Output. Mar 30, 2013 · 2013-03-30 10:31 am. 3900 Annapolis Lane North. OPTIONS. SP-7. I have this audio rearch sp-12 that was giving tome by a customer of mine. Serial Number: 98342002 (preamplifier), 9834013 (power supply) Voltage: 120V. Audio Research RFI-shielded or unshielded interconnect cables are highly recommended for connection to your power amplifier(s) and to other ancillary equipment. List price: $240. Feb 7, 2024 · Audio Research SP15. Like the Berning TF-10, it is neither a tube nor a solid-state preamp; rather, it is both at once. This is the only external modification to the original. by Tom Martin. If you want to contribute, please mail your pdfs to info@audioservicemanuals. May 16, 2024 · Audio Research SP-11 US Audio Mart $3,000 14% Apr 22, 2024. Cosmetically, this SP-6 is very good. I’m starting with a pair of Dynaco Mk III mono amps and now looking for a suitable preamp with a phono stage (most important). But it would appear that this move did not have much success as their solid-state gear back then For me, it's one word: iconic. Description: Hybrid (tube/FET) stereo preamplifier with one phono input, six line-level inputs, and two tape loops. Jun 16, 2022 · Audio Research SP17. Only rated 9/10 for its age, SP11 Manual. If the site has helped you and you also want to help others, please Upload a manual, circuit diagram or eeprom that is not yet available on the site. II is a revision of the original SP9 introduced in the Summer of 1987, embodying what Audio Research calls a group of 14 different improvements. SP-8. MSRP (US NEW RETAIL) SP16: $2,495. Product SKU: 36585. Me as well. I ran it with a number of amps, including an ARC Classic 60, Atmosphere OTL 60 watt mono blocks and even two of Frank Van Alstine's biggest stereo amps bridged. www. 300,00. Beats anything else close to that price. audioresearch. The SP16 is includes a phone stage and the SP16L is a line stage only. Audio Research brand vacuum tubes obtained from your authorized dealer will provide the best performance and reliability. Used – Mint. Contact the Audio Research Customer Service department to schedule any LS25 Audio Research Amplifier Audio Research SP15 Revision A Owner's Manual. Apr 29, 2024 · Audio Research SP 17 Hybrid Preamp. 02-24-2023 at 10:50pm. Audio Research SP-11 audioScope - The Original Classic €9,490 27% Aug 26, 2023. As can be seen from the pictures, the SP15 is constructed on Two (2) Chassis, utilizing Aircraft-Quality Connectors and an Interconnect Cable Forty-Eight (48 ") Inches long. Jun 16, 2020 · These (the 6 and 8 series preamps) put Audio Research into a ton of audiophile homes. That was 2½ years ago! A follow-up to that review is in progress; only the flagship SP15 preamp now remains a stranger to Santa Fe. Audio Research 150M. The idea that such perfection could be achieved from a valve model seemed even more unlikely. Product SKU: 26758. (Power on/off switch defaults to “off” position when unit is plugged into power receptacle. 00. ) The SP-5 Preamplifier is a stereo control unit aimed at providing essentially state-of-the-art performance at modest cost. SP16L: $1,995. $2,199. The SP-10 is the reference preamplifier having been universally acclaimed as the finest available. Two versions exist: SP16 and SP16L. or Best Offer. I have two Pass Camp Amps that I can run as Monoblocks with it, if that would be a good match. Ob serve the polarity as shown in diagram below when adding capacitors. Those two preamplifers are different in many ways, but I feel the mid to late 80's all-tube preamplifers are among the best ever made. Como Ficho €1,550 Apr 29, 2024. 5dB. Audio Research Sp 14 + Classic 60 Subito €3,500 Jan 15, 2023. Some of its standout features include:1. The SP-4 surpasses our best vacuum tube preamplifier in the most important areas. Six 12AX7's (3 phono, 3 line) and a single stage of regulation for each stereo stage. 56GoldTop said: ↑. With proper attention to set up the SP-12 can be placed in virtually any quality audio system, from the least costly to the most sophisticated, without compromise in system performance. 12-03-2008 at 11:45am. Well if you are looking for a new Audo Research preamp, that seems true, new one on a regular basis. I originally, had the SP-12, which I liked, but when the occasion arose to get an SP-20, with built-in phono board, I took it and have never looked back. Internally, much has been improved. This is a very detailed open and silky soundstage. Audio Research SP 12RM (Rack Mount) tube stereo preamplifier. Audio Research SP 11 MKll Hybrid Preamp US Audio Mart $2,900 Dec 8, 2023. The first serious system I heard as a young teen was big Apogee speakers powered by AR monoblocks. Preamplifier. Audio Research SP-12RM Tube Stereo Rack Mount Preamp w/ Phono Stage. High level inputs essentially overload-proof. vi dr zm qt ix mr et uo jj vb