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View Full Version : [FS] Velleman K8020 pre-amp.



awkwardbydesign
02-06-2016, 14:42
I bought this several months ago, as I already have a Velleman K4000 power amp, and thought it would be nice to have the pre. As standard it's OK, but there is a modification that improves it considerably. http://www.hardwareanalysis.com/content/article/1826/ So I've done that, and now it's pretty good. And it's surprisingly small, like a slightly wider brick!
But I am building a DHT preamp, and I have been ordered to sell! (There is an LDR pre for sale too. )
I used Kiwame 2W carbon film resistors, Valab polypropylene output caps, bypassed with Vishay MKP 1837s. The valves are Electro Harmonix ECC82s. I have tried various valves, and these that came with it are fine (Mullard M8136s are better, but expensive; you can have fun valve rolling!). You do lose the +6dB option, but the gain is plenty, in my opinion.
It is unmarked, except for the felt-tip socket labelling on the top at the back, so I could tell what is what. It will come off with WD40 or white spirit, or I will remove it if the buyer asks. Plus I have a copy of the manual.
I am asking £120 plus P&P for it, or you can pick it up in Plymouth.
http://i1134.photobucket.com/albums/m604/awkwardbydesign/Mobile%20Uploads/20160531_181326_zpsywrsowit.jpg
http://i1134.photobucket.com/albums/m604/awkwardbydesign/Mobile%20Uploads/20160531_181000_zpsyrioxpwl.jpg
http://i1134.photobucket.com/albums/m604/awkwardbydesign/Mobile%20Uploads/20160531_181009_zpstyitvxcd.jpg
http://i1134.photobucket.com/albums/m604/awkwardbydesign/Mobile%20Uploads/20160531_180909_zpspmxzrj32.jpg

awkwardbydesign
04-06-2016, 22:54
Bump.

awkwardbydesign
06-06-2016, 13:38
Bump.

awkwardbydesign
07-06-2016, 19:43
Bump.

awkwardbydesign
10-06-2016, 07:17
SOLD

hifinutt
11-06-2016, 17:56
well you guys who were looking at this and didn`t buy have missed out on a bargain.
thanks to dick for sending so promptly while my pre amp is away for servicing

the amp has been playing for a few hours and is very good indeed . very big bass and natural sounding . in fact i am surprised how much bass it produces
fuller review will be following in the future

Firebottle
11-06-2016, 20:21
Excellent Phil, it's gone to a good home :thumbsup:

I had a little input in making it as is :)

hifinutt
12-06-2016, 20:20
ah thanks . well it made a slight humming noise today but went off . its very full bloodied in presentation I must say . probably about 30% more bass than the tisbury . very musical little pre



be good to compare this very humble pre against some bigger boys

I absolutely love sniffing out these products that are more cost effective than the usual expensive esoterica
when I had an audio note m-one , that was above average too for very little money