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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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It is currently 23 Jan 2018, 12:50

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PostPosted: 12 Oct 2017, 13:52 

Joined: 09 Oct 2012, 19:43
Posts: 252
Location: Vancouver Canada
Pin 33 is an input pin used to alert the firmware that it should switch to analogue signal instead of digital. You can take it directly to ground or if it makes you feel better use a res. If you do choose to use a res, make it a low value less than 1K to ensure the pin 33 has been taken low enough to be seen as a "logic zero" by the control cir's.

PostPosted: 22 Oct 2017, 11:48 

Joined: 22 Oct 2017, 11:33
Posts: 1
I have a set of these bought on ebay and not working with windows 10 laptops USB socket (USB 3?)
But that dosent really matter as I want to try to follow
and install a jack plug which I intend to connect to a bluetooth aux

I'm a beginner so a couple of questions
1) The description says "it suffices to delete the integrated circuit UAC 3552A" then the photos show it as removed. Do I need to do this as I am not confident I can remove this without causing damage. If there is no USB power then is this unit not deactivated?
2) I want the best possible sound so I was going down the "attenuation" route but I noticed the Japanese translation suggested different resistor values to the French translation. Also where do I buy resistors

All advice most gratefully received

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