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AUDIO RESEARCH SP6a

    https://www.audioantiquary.com/en-us/audio-research-sp6a/
    AUDIO RESEARCH SP6a ... 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. The device follows the new and much more refined aesthetic canons inaugurated by the two previous models, refined and "professional" livery that will ...

Audio Research SP6 Tube Preamp - Kevin O

    http://kevin.kevino.org/tubes/sp6.shtml
    The speakers were Acoustic Research 312HO's with all of the original wiring and crossovers removed. The cabinets were stiffened by adding additional bracing. The preamp drove a passive two-way crossover with a 200Hz turnover frequency. The low pass side of the crossover was 3rd order and the high pass side was 1st order.

Audio Research SP-6a | Tube | Audiogon

    https://www.audiogon.com/listings/lisa4h76-audio-research-sp-6a-tube
    Preamplifiers. Tube. Audio Research SP-6a used Selling my SP-6a. I have owned for about 20 years. Always used as a back-up when primary down for upgrades/repairs. Retubed about 10 years back. Ran continuously for last 24 hours.

Audio Research SP-6 High Definition Stereo Preamplifier ...

    https://www.hifiengine.com/manual_library/audio-research/sp-6.shtml
    These (the 6 and 8 series preamps) put Audio Research into a ton of audiophile homes. These are somewhat overly warm but detailed preamplifiers that are wonderfully accurate on voices and most instruments. They are available on the used market at very affordable (by 2020 standards) of about $700. Beats anything else close to that price.

Audio Research – High-end audio equipment

    https://audioresearch.com/
    Preamplifiers. Audio Research has produced some of the finest components for music reproduction; this is especially true with regard to preamplifiers. In 1973, the SP3 was hailed as the best preamplifier available, and this tradition of excellence has continued ever since. The Reference Series from Audio Research was first introduced in 1995 ...

Audiogon Discussion Forum

    https://forum.audiogon.com/discussions/is-audio-research-sp-6-considered-a-good-model
    Is Audio Research SP-6 considered a good model? I'm trying to decide on how to replace my Plinius 9200 with separates. I have a 70's era SP-6 and I'm wondering if it's worth servicing and keeping, or are there other tube pre amps (Audio Research or otherwise) worth looking for used (1-2K range).

The 5 Best Tube Preamps 2022 for Serious Audiophiles

    https://midination.com/audiophile/best-tube-preamps/
    This tube preamp is primarily designed for headphones, and you will get the best audio performance by pairing it with a headphone. Regardless of the power of the headphones, you can rest assured that they will be compatible with this unit. During testing, I observed that this unit is much better than my former preamp.

Tube Preamp Reviews - Stereophile.com

    https://www.stereophile.com/taxonomy/term-a/137
    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. The price is …

SoundStage! Equipment Review - Audio Research SP16 ...

    https://www.soundstagenetwork.com/revequip/audioresearch_sp16.htm
    Preamplifier – Audio Research SP6A. Analog – VPI HW19 Mk IV turntable w/ Super Arm Board and VPI VTA adjuster, Butternut Audio-modified Rega RB300 tonearm, Clearaudio Aurum Beta S and Sumiko Blue Point Special cartridges. Digital – Rega Planet 2000 CD player.

Tube Preamp Reviews - Stereophile.com

    https://www.stereophile.com/category/tube-preamp-reviews
    The $1485 PV-5 is a "budget" version of C-J's $2850 Premier Three preamplifier, but according to the manufacturer it embodies much the same kind of circuitry. Tubed preamplifiers have a well-earned reputation as system busters. Many of them during warmup produce horrendous bangs or plops so severe that every speaker fuse in the system blows.

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