Adding inputs

[speakerman1]

I'm looking at this pre. I would want more inputs though. How hard would it be to do it?

http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... AX:IT#shId

Larry

 

[rtp_burnsville]

Depends......

The simplest would be soldering a couple resistors in a summing network configuration. The next would be some resistors and a summing op amp. Next would be something like individual buffer amps on each new input summed together.

If you want something easy check out the slew of cheap audio mixing boards. For well less than $100 you can get all kinds of balanced and unbalanced inputs and patch points. Some of these are pretty darn nice for the price.

Robert

 

[laatsch55]

But they aren't tubed.

 

[speakerman1]

I'm also looking to upgrade my Hafler DH-101. There are some kits on ebay. Lee can you check them out.

Larry

 

[laatsch55]

Sure can, soon as I get off work. Can ya send me a link??

 

[laatsch55]

Sure can, soon as I get off work. Can ya send me a link??

Dave may have a better option for those kits also. I believe Mark had some input also.

 

[speakerman1]

Sure

Larry

 

[speakerman1]

http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... K:MEWAX:IT

http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... K:MEWAX:IT

http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... K:MEWAX:IT

http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... K:MEWAX:IT

Larry

 

[laatsch55]

HMMMMMMMM......................

 

[speakerman1]

What HMMMMMMMMMMMMMMMMMMM.

Larry

 

[laatsch55]

Seems reasonable.