The Sound of Two Transistors Clapping

[xrk971]

You can listen to the sound of two transistors (JFET and BJT) clapping with my new amp here:

http://www.diyaudio.com/forums/solid-state/301164-mosfet-source-follower-headamp-34.html#post4973238

Soundclips available and recorded with this (adjustable) harmonic profile with R6 at 50ohms:

Here is the measured frequency response:

 

[xrk971]

The sound of a 2SA1837 clapping is pretty nice

135mA bias and 20v supply driving 270R load at 700mV with 0.0037% THD. -84dB H2 and -96dB H3 and not much else.

More info here:

http://www.diyaudio.com/forums/solid-state/301164-mosfet-source-follower-headamp-34.html

 

[xrk971]

Just an update. The two transistor amp was put into a mint tin and it sounded very nice.

XRK Audio Class A NHB Pockett Amp Review

http://www.diyaudio.com/forums/group-buys/302859-xrk971-pocket-class-headamp-gb-51.html

Here is a souped up version (the NHB):

FFT playing 700mV into 270ohm load:

 

[Bigun]

You are really working hard to sell this amp

 

[ammel68]

You are really working hard to sell this amp

You might work just as hard too if you could get $200 for something that fits inside a sardine(ah, I mean Altoids) can.

 

[Bigun]

Well, it's marketing 101 - if you price low people will believe it's crap, if you price high enough to produce a small wince then people will perceive it to be more valuable.

 

[xrk971]

Well the last post was in february and a lot has happened. Just stating facts: that I made it pocket sized, and it was favorably reviewed. So like I said, an update. If you read the review the reviewer actually said it was the best value beating out the sound quality of amps many times the price. If the price of a prebuilt amp bothers you - I still make available PCBs for DIYers - just PM me. The hand built amps get measured and hand-tuned, and use matched FETs. So there's actually a lot of work that goes into them.