stellarelephant
100+ Head-Fier
Edit 7/30/17: This amp is now available from the XRKAudio Etsy store. PCBs for DIY versions are available too.
"In systems where the utmost in natural reproduction is the goal, simple single-ended Class A circuits are the topologies of choice." --Nelson Pass
Single-Ended (SE) Class A amplification that fits in your pocket! Yes, it's a real thing now. Possibly a first in portable listening...? This little DIY-friendly amp is now being offered as a fully populated and tested PCB, professionally built by the amp's designer himself, known as xrk971 on the diyAudio forums. You can skip all the soldering and just install the board into an Altoids tin, add batteries, and voila! He just started selling them on eBay...and while I will be jealous if you get one delivered before I finish building my own, I think everybody with ears should know about this amp!
X's eBay listing for the Pocket Class A
A month ago I started a thread in the DIY forum about this amp project. I am building two of these amps myself with bare PCBs I got from the original group buy at the diyAudio forums. (There is a second group buy going on now for the DIY-inclined.) I am really excited about the potential of this amp...
First pic shows what you get...second two show the amp at home in a tin.
This ain't your mama's CMOY...no op-amp...two transistors per channel. "Curiously Good Sound" lol.
The amp uses some killer high-grade components...Panasonic OSCON caps, WIMA audio grade film caps, Switchcraft jacks, Alps potentiometer, Zetex power MOSFETs, NXP JFETs, and 1% SMT resistors.
Here's my original Head-Fi thread on the DIY version of this amp, where I'll be posting my build and listening impressions when parts arrive: http://www.head-fi.org/t/833106/new-diy-altoids-tin-amp-the-class-a-wintergreen-handwarmer-by-xrk971
and more info including measurements of the amp here:
http://www.diyaudio.com/forums/group-buys/302859-xrk971-pocket-class-headamp-gb.html
"In systems where the utmost in natural reproduction is the goal, simple single-ended Class A circuits are the topologies of choice." --Nelson Pass
Single-Ended (SE) Class A amplification that fits in your pocket! Yes, it's a real thing now. Possibly a first in portable listening...? This little DIY-friendly amp is now being offered as a fully populated and tested PCB, professionally built by the amp's designer himself, known as xrk971 on the diyAudio forums. You can skip all the soldering and just install the board into an Altoids tin, add batteries, and voila! He just started selling them on eBay...and while I will be jealous if you get one delivered before I finish building my own, I think everybody with ears should know about this amp!
X's eBay listing for the Pocket Class A
A month ago I started a thread in the DIY forum about this amp project. I am building two of these amps myself with bare PCBs I got from the original group buy at the diyAudio forums. (There is a second group buy going on now for the DIY-inclined.) I am really excited about the potential of this amp...
First pic shows what you get...second two show the amp at home in a tin.
This ain't your mama's CMOY...no op-amp...two transistors per channel. "Curiously Good Sound" lol.
The amp uses some killer high-grade components...Panasonic OSCON caps, WIMA audio grade film caps, Switchcraft jacks, Alps potentiometer, Zetex power MOSFETs, NXP JFETs, and 1% SMT resistors.
Here's my original Head-Fi thread on the DIY version of this amp, where I'll be posting my build and listening impressions when parts arrive: http://www.head-fi.org/t/833106/new-diy-altoids-tin-amp-the-class-a-wintergreen-handwarmer-by-xrk971
and more info including measurements of the amp here:
http://www.diyaudio.com/forums/group-buys/302859-xrk971-pocket-class-headamp-gb.html
Last edited: