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SOLD: MxM Portable Amp (Better than Mini^3)

post #1 of 3
Thread Starter 
Hello!
Today I'd like to introduce you a Polish DIY Amp. (scheme in attachment, copyright by Majkel, x500, Modrzew from forum.mp3store.pl)

My version has 2 AD8066 instead of AD8397. So that it works longer on battery (about 11-12 hours), has more deeper bass and mids are more forwarded. It's perfect amp for iRiver Hxxx + Senn HD 25.
Caps: JVC 3300uF, Black Gate N 33uF

Amp is enclosed in Hammond Black Enclousure: http://www.hammondmfg.com/1455B.jpg

I'll add more photos tommorow.
Comes with charger (220V)

PM me your offers and questions!
Kind Regards!
LL
post #2 of 3
Thread Starter 

Mxm Amplifier

Hello Again!

Pictures are enclosed. It's not designed by me, but by my forums-buddy
(forum.mp3store.pl and head-fi.org) - Majkel
(Head-Fi: Covering Headphones, Earphones and Portable Audio - View Profile: majkel). He has designed
great amp constructions (eg. Moonlight for HD600)

Now more about MxM. It has great SQ to price ratio. It's better than
iBasso Tx series and Mini^3. Here are the constructor thoughts:
http://www.head-fi.org/forums/f5/min...7/#post4262873
I swapped the AD8397 for AD8066 which are also great. I chosen them,
because their sound's composing great with Hd 25.
I mean there is more deeper bass, wider soundstage (HD 25 has narrow stage), there is little less details, but HD 25 are very analytical so it's perfect
now. Mids are little coloured and forwarded. Highs are very clear and clarified. No "ssss'es". AD8397 were hissing with HD 25.

JVC 3300uF/16V has wider soundstage than BG STD 2200uF. It's also more natural, deeper and airy. It's less detailed, but much more dynamic and musical.
BG N as lateral cap gives warmness and more air. Great synergy between that and JVC cap.

Alps RK097 is very precise and "clean" potentiometer. Ideally separates channels. It's one of the best potentiometers for portable use.

I can also translate impressions of some Polish users of this amp.

Specifications:
- JVC 3300uF/16V main cap
- Black Gate N 33uF/16V - lateral cap
- 2 x AD8066 Op-amp
- Alps RK097 with switch 2x10kOhm potentiometer
- Hammond series 1455 enclousure - black
- Alu anodized knob
- Profitexx accu 260mAh
- sLED diodes - blue on the front (power on), red on the back (charging)

Battery life is about 12 hours, charge for about 2h (12V/0.5A)

Price range: hmm about SOLD?

Kind Regards!
LL
LL
LL
post #3 of 3
Thread Starter 
Bump

More impressions added.
Pm me your offers, don't wonder - ask please! Price is for big negotiation!

Kind regards.
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