PDA

View Full Version : Modifying MF Headphone amp


mikmas
03-01-2019, 20:55
Anyone have experience of modifying an MF V-Can headphone amp (version 1) and/or can offer advice?
Currently it has too much gain and I can barely open the pot before it gets too loud.

I will be googling it to see if there's anything out there but just wondered if anyone had already done such...
Batty
03-01-2019, 21:17
I upgraded the V3 so no real help sorry.
Floyddroid
03-01-2019, 21:19
Just out of interest which headphones are you using?:)
mikmas
03-01-2019, 21:21
Just out of interest which headphones are you using?:)

Senn HD600, Senn Momentum, Nuraphones ....
Firebottle
03-01-2019, 21:29
I'm sure something could be done to reduce the gain.
A schematic would help a lot but otherwise a little tracing of the feedback components.
southall-1998_mk2
03-01-2019, 21:42
HD600 = Lovely! One of my favourite cans.

S.
mikmas
03-01-2019, 21:48
I'm sure something could be done to reduce the gain.
A schematic would help a lot but otherwise a little tracing of the feedback components.

Not had much luck with Google re schematics (or anything much at all for V-Can) but will keep poking around tomorrow ....
mikmas
03-01-2019, 21:53
HD600 = Lovely! One of my favourite cans.

S.

:thumbsup::thumbsup::thumbsup:
mikmas
04-01-2019, 00:06
Cracked it !!

Google is indeed your friend :thumbsup:

Thanks all for suggestions though :)
Firebottle
04-01-2019, 08:28
Excellent. Did you find a schematic?
mikmas
04-01-2019, 17:08
Excellent. Did you find a schematic?

No schematics - but a guy in Scotland sells an upgrade kit for the V-Can and mentions the gain resistor details on his website.
If it works, might well invest in his kit - full caps upgrade (if he still sells it) :thumbsup:

http://rockgrotto.proboards.com/thread/5227/good-price-free-mod-tips
struth
04-01-2019, 17:13
No schematics - but a guy in Scotland sells an upgrade kit for the V-Can and mentions the gain resistor details on his website.
If it works, might well invest in his kit - full caps upgrade (if he still sells it) [emoji106]

http://rockgrotto.proboards.com/thread/5227/good-price-free-mod-tipsI upgraded my mf buffer with one of his kits. It made a decent difference. Ian has it now
mikmas
08-01-2019, 14:17
No schematics - but a guy in Scotland sells an upgrade kit for the V-Can and mentions the gain resistor details on his website.
If it works, might well invest in his kit - full caps upgrade (if he still sells it) :thumbsup:

http://rockgrotto.proboards.com/thread/5227/good-price-free-mod-tips

Just to add closure to this - done the modifications just now (two resistors and two caps) and the result is spot on!!

Much improved range on the volume control ... and also some added clarity. The guy at Rock Grotto certainly knows his onions :thumbsup::thumbsup::thumbsup: