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Best Cheapo Ebay DIY Amp Kit?

post #1 of 12
Thread Starter 

So I've decided that I want to build a headphone amp just for fun. However, this is my first time attempting this as well as my first time soldering so I don't want to spend much money on it given the relatively high likelihood of me completely messing it up. So I was wondering what you all though about the cheap headphone amp kits on ebay? 

Are they at all worth the time and money to build or just total garbage?

 

The ones that I have found that look decent are:

 

http://www.ebay.com/itm/A1-clone-Class-A-headphone-amp-kits-WITHOUT-enclosure-and-transformer-/251024937361?pt=US_Amplifier_Parts_Components&hash=item3a72409191

 

http://www.ebay.com/itm/DIY-RA1-Headphone-Amplifier-Kit-Power-AMP-JRC4556AD-C39-/121144802425?pt=US_Pro_Audio_Amplifiers&hash=item1c34cafc79

 

http://www.ebay.com/itm/5W-PASS-ZEN-High-end-Class-A-Headphone-Amplifier-kit-5W-AMP-TRACKING-NUMBER-/151040995421?pt=US_Amplifier_Parts_Components&hash=item232abeb05d

 

Some cmoys :

 

http://www.ebay.com/itm/Under-20-00-DIY-Cmoy-Hi-Fi-Headphone-amplifier-KIT-18volt-power-Guaranteed-/200908741891?pt=AU_Electronics_Audio_Amplifiers&hash=item2ec7181d03

 

http://www.ebay.com/itm/OPA2604-x-2-Headphone-Amp-kits-CMOY-/250905505855?pt=US_Amplifier_Parts_Components&hash=item3a6b22303f

 

More expensive but looks to be highest quality and comes with everything including enclosure:

 

http://www.ebay.com/itm/Compatible-6xxx-12xxx-6N11-12AU7-ECC88-Tube-valve-DIY-Headphone-Amplifier-AMP-U-/120990700325?pt=US_Home_Audio_Amplifiers_Preamps&hash=item1c2b9b9325

 

 

So my question is which one of those (or other cheapo kits) would be best? Has anybody tried them themselves and can attest to quality?

 

Thanks in advance!

post #2 of 12

I imagine this one is probably the best based on the comparison review:

 

JDS Labs cmoyBB v2.02

post #3 of 12
Thread Starter 

That one already comes assembled and I would like to try my hand at putting together an amp, thanks though!

post #4 of 12

Why not just build one from scratch?

 

Tangent CMoy

post #5 of 12
Thread Starter 

I could just get my own but I was trying to simplify the process since it will be my first attempt. 

Also, the price of the kits is comparable if not cheaper than ordering all the components separately.

 

Does anybody have any experience with this seller in particular:

http://www.ebay.com/itm/Under-20-00-DIY-Cmoy-Hi-Fi-Headphone-amplifier-KIT-18volt-power-Guaranteed-/200908741891?pt=AU_Electronics_Audio_Amplifiers&hash=item2ec7181d03

 

He has 100% positive reviews and all the comments seem to be very good

 

Edit: I just did a quick search and it seems that Fred Fred is pretty well regarded around these parts. Can anybody with personal experience with his kits confirm this?


Edited by jmoore914 - 7/17/13 at 2:13pm
post #6 of 12

Yes he's great very_evil_smiley.gif

post #7 of 12

From what I've heard, that Fred_Fred guy is pretty smart and

an all round pretty good guy.

 

L3000.gif

post #8 of 12

Ya Fred Fred has some really good stuff.  Kinda want a cmoy for my portable rig.  contenplating between that and an mini^3.  Just be really careful with some of the chinese stuff that you see on ebay.  

post #9 of 12
Quote:
Originally Posted by jmoore914 View Post

So I've decided that I want to build a headphone amp just for fun. However, this is my first time attempting this as well as my first time soldering so I don't want to spend much money on it given the relatively high likelihood of me completely messing it up. So I was wondering what you all though about the cheap headphone amp kits on ebay? 

Are they at all worth the time and money to build or just total garbage?

 

The ones that I have found that look decent are:

 

http://www.ebay.com/itm/A1-clone-Class-A-headphone-amp-kits-WITHOUT-enclosure-and-transformer-/251024937361?pt=US_Amplifier_Parts_Components&hash=item3a72409191

 

http://www.ebay.com/itm/DIY-RA1-Headphone-Amplifier-Kit-Power-AMP-JRC4556AD-C39-/121144802425?pt=US_Pro_Audio_Amplifiers&hash=item1c34cafc79

 

http://www.ebay.com/itm/5W-PASS-ZEN-High-end-Class-A-Headphone-Amplifier-kit-5W-AMP-TRACKING-NUMBER-/151040995421?pt=US_Amplifier_Parts_Components&hash=item232abeb05d

 

Some cmoys :

 

http://www.ebay.com/itm/Under-20-00-DIY-Cmoy-Hi-Fi-Headphone-amplifier-KIT-18volt-power-Guaranteed-/200908741891?pt=AU_Electronics_Audio_Amplifiers&hash=item2ec7181d03

 

http://www.ebay.com/itm/OPA2604-x-2-Headphone-Amp-kits-CMOY-/250905505855?pt=US_Amplifier_Parts_Components&hash=item3a6b22303f

 

More expensive but looks to be highest quality and comes with everything including enclosure:

 

http://www.ebay.com/itm/Compatible-6xxx-12xxx-6N11-12AU7-ECC88-Tube-valve-DIY-Headphone-Amplifier-AMP-U-/120990700325?pt=US_Home_Audio_Amplifiers_Preamps&hash=item1c2b9b9325

 

 

So my question is which one of those (or other cheapo kits) would be best? Has anybody tried them themselves and can attest to quality?

 

Thanks in advance!

 

CMoy is the cheapest.  Some of the other amps you linked need transformers and cases and heatsinks.  The Pass Zen clone is going to cost *lots* more than you think.

 

If you really want to learn, build a CMoy using PC/perf board.  Don't use a kit.

post #10 of 12
Thread Starter 

I thought that starting from scratch would be too difficult so based on fred's recommendation I went with this kit:

http://www.ebay.com/itm/200940914746?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

Comes with everything except the power supply and enclosure (which will just be an altoids tin)

 

Can't wait to get it and start messing it up horribly tongue.gif

post #11 of 12

Yep.  That Fred guy is tolerated around here because his stuff is pretty damn good. wink.gifwink.gifwink.gif  Good luck on the build!


Edited by tomb - 7/18/13 at 4:50pm
post #12 of 12

i have built cmoy kits from Fred_fred2004 and i highly recommend him

but i do not think its *to* bad to buy audio diy kits from china, they are good priced, expectedly if you your new to soldering, why buy stuff that cost $100 and destroy it

when you can buy some cheap kits on ebay like volume meter, electronic doorbell kit and this cheap amp to train your self soldering before stepping up to something with more quality and power

 

and a nice warning, use some cheap headphones to test with* :)

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