2. amps-preamps
  3. 177878-168660

Buffer amp no gain

I would like to put a buffer stage between volume control and power amp to ensure impedance matching. I like the look of the First Watt B1 but don’t need the volume controls.

My volume control is a passive ladder type with expensive resistors, silver wired etc

So my question is, can I buy a buffer with phono inputs and outputs but no volume pots. Either valve or solid state is OK.

bumpy48
noromance's avatar
noromance
9,905 posts
 

Cathode Follower tube circuit

noromance's avatar
noromance
9,905 posts
 

micro iTube2 by iFi audio - Vacuum Tube Buffer and Line Stage Preamplifier (ifi-audio.com)

bumpy48 OP
27 posts
 

Sorry if I did not explain fully. I have no need for any gain in my system so the preamp needs to add no amplification.

Additionally after a lot of trial and error the passive volume control is great. 

What I want to do is to better match the output impedance of the DAC with the input impedance of the power amp.  PVCs work against you in this.

It could be argued if it sounds great now, then why change it. Its just an itch to be scratched.

bumpy48 OP
27 posts
 

Thanks noromance. My system is built around simplicity and all the cathode followers I have found have volume controls or, like the ifi, lots of redundant circuitry.

Picture the First Watt B1 with volume controls removed and that is what I would like to buy

serjio's avatar
serjio
371 posts
 

https://www.decware.com/newsite/ZROCK.html

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