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AUDIO RESEARCH SP6a
https://www.audioantiquary.com/en-us/audio-research-sp6a/
The device is sold with 6 Russian production tubes. If you want to make a significant leap in quality we can install a sextet of ECC83 original NOS Telefunken selected and coupled by us visible in the photo gallery. The price of the pre SP6a refers to the original valves, if you want the upgrade to the German valves 800.00 euros must be added.
Audio Research SP6a DC on output | diyAudio
https://www.diyaudio.com/community/threads/audio-research-sp6a-dc-on-output.838/
HI I have recently bought an Audio Research SP6a preamp and very happy with it generally. There is however a problem with it when powering it on and off. It get a large amount of DC as the woofers make a very unnatural noise and the cones go forward for quite a few seconds and then gradually go...
Audio Research SP6 Tube Preamp - Kevin O
http://kevin.kevino.org/tubes/sp6.shtml
Modified Audio Research SP6 Tube Preamp. In July, 2002 I picked up a 1978 Audio Research SP6 preamp. Here is a photo from the original Ebay ad where I found and bid on it. The unit was in very good condition but badly in need of repair. This preamp had an above average power supply with 11 large twist-lok can capacitors.
Audio Research SP-6a All Tube Preamp, Fully Tested | Tube ...
https://www.audiogon.com/listings/tube-all-tube-preamp-fully-tested-2018-01-06-preamplifiers
Audio Research SP6A All Tube Preamplifier Fully Tested and Performing. I have two of these wonderful units up for sale which are identical except one comes with the original manual and the other comes with a copy of the manual. They have been completely tested in our lab and passed with flying colors.
Audio Research SP-6a | Tube | Audiogon
https://www.audiogon.com/listings/lisa4h76-audio-research-sp-6a-tube
Audio Research SP-6a for sale. 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. Sounded great wi...
Is Audio Research SP-6 considered a good model?
https://forum.audiogon.com/discussions/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). Also have a AR D52B that I will definitely be replacing. Totem Forest speakers Rega P3 Exposure ...
ARCDB
https://arcdb.ws/SP6/SP6.html
The Audio Research Database - ARCDB - is a tribute to Audio Research Corporation (ARC) for their tremendous contributions to the world of high end audio. About Contribute
Audio Research SP-6A - YouTube
https://www.youtube.com/watch?v=1debNRCDaw8
Function testing of SP-6A
Audio Research – High-end audio equipment
https://audioresearch.com/
Audio Research continues its dedication to unparalleled musical expression and crafting components of the highest quality and lasting value for its customers. Our long-term dedication to service is peerless in this industry (Audio Research, with few exceptions, can repair anything ever produced during its entire history).
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