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"ps audio 6 0 stereo preamp used"

Vintage Vacuum Tube Audio
I know that the ARF has a section for tube audio but I don't post much there because I know that the main thrust is for radio. However, my main interest is late 50s to mid 60s tube audio. I also like Knight-Kit transistor amplifiers too. So, if you lik
Capacitors in tube audio
Why are decoupling caps between plate and grid lower values like 0.1uF-0.33uF and the output decoupling cap higher values like 1.5-2.2uF? I understand the math behind the output decoupler where-by a lower value causes the cutoff knee to be at a higher
My take on Don Sach's SP-14 line preamp
Review of Don Sach's SP-14 The tube preamplifiers and power amps available from Tubes4hifi and VTA, and their various iterations by Tube Nirvana, are nonpareil at even the most basic entry level. The spectrum is North American-built and incorporates th
VTA SP9 preamp with tone controls
I just finished building this preamp for a customer, the SP9 preamp with tone controls, and added PH12 phono circuit. This came out fairly nice. The circuit is also available as a plug-in replacement for the PAS3 PC5 line amp. I've had this circuit for
Older Audio, Hi Fidelity and Hi-Fi Stereo Review magazines in pdf form
Back when I was a young kid in the late 1950's and early 1960's the only source of information on Hi-Fi was magazines. The magazines at the time were maybe 35 cents to 75 cents each. Now and then I would be able to come up up with the cash to buy one.
SCA 35 Can you replace preamp section with vta preamp section?
I understand Dynaco used what they called lean circuitry when making the SCA 35. I was wondering whether it would be a simple operation to remove the preamp board and install one of the tubes4hifi preamp boards, perhaps even a vta driver section upgrade.
Stereo/Mono Switch....
I would like to get some opinions on the removal of the switch. My basic question is...."should I remove the switch from the circuit first of all, and if so then what is the proper method of doing so for a stock board". Thanks to all who reply,
SP12 preamp
Does anyone have the SP12 preamp and what is your impressions. I am looking to build a new preamp. Thanks
Good values in audio today - Add yours ...
There is a thread on the forum about "audio voodoo" and the financial rip-offs that some sellers attempt to perpetrate on us audiophiles (or is it "audiophools"- lol). What audio product have you personally used which you feel is a goo
Craigtone's System
Here is my ST-70 system ... Sources: Rega P2 w/DL-103, NAD C521BEE w/OPA627 op-amps & output cap bypass Preamps: Rotel Phono w/LM4562 op-amps & output cap bypass, Bottlehead FPIII w/upgraded caps & RCA Clear-tops Amp: Dynaco ST-70
Dynaco PAS3 Balance control replacement
Hi I have recently purchased a Dynaco PAS3 in need of repair. The 750K balance control is damaged. I am having trouble finding a replacement. Does anyone know where I can get one. Can I substitute a 500K or a 1M pot? Any information would be greatly
DIY Audio articles from Rod Elliot of Elliot Sound Products
Rod Elliot of Elliot Sound Products in Australia has a great online list of DIY Audio articles ... Things such as ... How to spot fake audio components Biamping benefits Negative feedback Valve (tube) amplifiers Make your own ABX
VTA stepped attenuator in place of my PAS-3
Hey Bob, I finally got the stepped attenuator you sent me installed into my VTA ST-70 amp which I built from your kit. I use this amp in my playroom when we have people over. This is a second system and I had a basically stock PAS-3 that I was using for m
sp-8 preamp ?
Why is there no bass and treble control on some preamps like the SP-8?
Preamp Comparison
I hesitate to ask the following because it partially involves a SS preamp, but would like to know what others think regarding the comparison between the Tubes4HiFi PAS 3X upgrades including the phono upgrade, and a Hagerman Bugle2 preamp:
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