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 NEW  Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization.

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 Post subject: Re: Tube Buffer Amp
PostPosted: 22 Apr 2013, 17:06 
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Joined: 19 Mar 2012, 19:22
Posts: 168
Location: Wales, UK
Hi,

Many thanks again everyone for your help. It works an absolute treat :up:

I was wondering could the circuit be modified so that I can use a 12AU7 instead of a 6SN7?

Many thanks

Phil


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 Post subject: Re: Tube Buffer Amp
PostPosted: 22 Apr 2013, 18:44 
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Joined: 06 Jun 2008, 18:23
Posts: 5151
Location: Australia
Suncalc is best to answer this but I can see no reason why not But a better hi-fi tube is the 6SN7 IMHO.

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Projects: "Precision" - 300W Class AB Holton power amp | "retro2308" - chip based headphone amp | ”Calibre 834” - tube phono MM preamp |


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 Post subject: Re: Tube Buffer Amp
PostPosted: 23 Apr 2013, 06:32 
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Joined: 02 Mar 2009, 12:41
Posts: 1110
Location: Vänersborg, Sweden
Another odd idea is to go for a ready made unit like this one:

Image

Bought this 6N3 tube buffer from an AliExpress store (http://www.aliexpress.com/item/Tube-6N3-Buffer-Audio-Preamplifier-Pre-AMP-Kit-For-DIY/735371667.html.
There are other versions around with a single and a dual 6N3, the latter in an SRPP-config. Mine runs from a single 12VAC.

I have an idea to either use it as a buffer between varous audio sources and power amps, OR integrate it with a power amp. I can see it being a good buddy with my Priboy.

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“If you don't know where you are going, any road will get you there.”
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 Post subject: Re: Tube Buffer Amp
PostPosted: 23 Apr 2013, 18:20 
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Joined: 19 Mar 2012, 19:22
Posts: 168
Location: Wales, UK
Hi,

Thank you both for your suggestions. I took a closer look at that website and they do have some interesting ready made pre-amps. If I find what I'm looking for then I might buy one.

Phil


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