Has anyone compared GC amps(LM3875/3886/4780) with other DIY SS amps(Leach,ESP) ? - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 15th October 2004, 08:26 PM   #1
percy is offline percy  United States
diyAudio Member
 
Join Date: Apr 2004
Location: MN
Default Has anyone compared GC amps(LM3875/3886/4780) with other DIY SS amps(Leach,ESP) ?

Has anyone listened to a GC as well as other reputed SolidState amps like the Leach Amp and ESP(Rod Elliott) P3A and P101 ?
What were your impressions ?
I am not asking about numbers(specs) or which is better. I'd just like to know what your listening experiences were.
Thanks!
  Reply With Quote
Old 15th October 2004, 10:28 PM   #2
Nuuk is offline Nuuk  United Kingdom
diyAudio Member
 
Nuuk's Avatar
 
Join Date: Feb 2003
Location: Somerset, SW England
I would guess that many of us have built GC's after having owned discrete SS amps.

In my case, I ahd a pair of highly modified Arcam A60's that I spent three years improving. But the GC was clearly an improvement over what were very good discrete SS amplifiers.

I have not heard of many people building a GC and then going back to their previous amplification.
__________________
The truth need not be veiled, for it veils itself from the eyes of the ignorant.
  Reply With Quote
Old 15th October 2004, 10:31 PM   #3
diyAudio Member
 
Greg Erskine's Avatar
 
Join Date: Jan 2002
Location: Sydney/Australia
Default Re: Has anyone compared GC amps(LM3875/3886/4780) with other DIY SS amps(Leach,ESP) ?

Quote:
Originally posted by percy
Has anyone listened to a GC as well as other reputed SolidState amps like the Leach Amp and ESP(Rod Elliott) P3A and P101 ?
What were your impressions ?
I am not asking about numbers(specs) or which is better. I'd just like to know what your listening experiences were.
Thanks!
Hi percy,

This is a really loaded question because there are just so many different implementations of a Gainclone. I don't believe anyone can give you the definitive answer.

For example, I've heard Joe Rasmussen's JTLi and in his system it sounds very very good , one of the best systems I have ever heard. On the other hand, my humble GCs, although well built, in my system don't come near that of Joe's JTLi but they do hold their heads up well compared to my P3A, SC480 and DIGI125 (in my system.) My reference amp is a standard AKSA 55 and it is still my favourite.

If you haven't built a GC yet, I would highly recommend you do. Why not 3, once you start you just can't stop. I think you have to experience a GC in your own system, don't rely to heavily on others opinions.

BTW: I haven't tried buffered, filtered or regulated GCs so can't comment on them. From what I read they may? sound better and the JTLi is buffered and filtered.
__________________
Greg Erskine
  Reply With Quote
Old 15th October 2004, 11:23 PM   #4
Cobra2 is offline Cobra2  Norway
DIY !
diyAudio Member
 
Cobra2's Avatar
 
Join Date: Apr 2002
Location: Stavanger, Norway
Send a message via Skype™ to Cobra2
Default I have given away a few chipamps...

Nothing compares to Dynamic Precision, Adyton or my home-built N-channel.

Arne
__________________
Don't believe everything you think...
  Reply With Quote
Old 16th October 2004, 12:27 AM   #5
diyAudio Member
 
Join Date: Aug 2003
Location: Prague,Czech Republic
To Nuuk : It's of no account, it only signify, that this Arcam is not probably quite OK . GC's are amps for begginers, easy to build, with solid parametres and cheap. Or do you realy mean, that they are state of art and that not exist something better ?
  Reply With Quote
Old 16th October 2004, 12:49 AM   #6
JoeBob is offline JoeBob  Canada
diyAudio Member
 
JoeBob's Avatar
 
Join Date: Nov 2001
Location: Montreal, Canada
Well, "GCs" are state of the art, a SET may not be "state of the art" and still sound better though, it's all up to preferance.

As for comparing them, well, the GC is better than some and worse than others. It all boils down to PREFERANCE. A gainclone is a good amp, it is. Some people love it, to others it's not their cup of tea. A gainclone is cheap, pick up some of BrianGT's boards and it'll be quick and easy to build as well, then YOU'LL know if you like it or not and how it compares to other amps you've heard.

I personally like gainclones, I listen to some, but I also listen to my single-ended Class-A MOSFET amps alot as well I like them both. I hope you do go ahead and try it for yourself, it's the only way you'll know.
  Reply With Quote
Old 16th October 2004, 12:49 AM   #7
diyAudio Member
 
Lazyworm's Avatar
 
Join Date: Nov 2003
Location: Stockholm in Sweden
Send a message via ICQ to Lazyworm
Jeff Rowland and the model 12 Amplifier for +13000US have got really good reviews even compared to very expensive discrete amps like Krell and ML.

I have never heard theese amps so I cant say anything about it, but I would think that they are darn good.
They use LM3886T(12/channel) in those amps.

  Reply With Quote
Old 16th October 2004, 01:08 AM   #8
percy is offline percy  United States
diyAudio Member
 
Join Date: Apr 2004
Location: MN
Thanks for all your responses.
It seems that GC would stand up really well atleast to what I am comparing with. i.e the SS amps I mentioned above.
For the price, I don't expect GC to be anyway near the other $$$ amps that were mentioned above, although Lazyworm's post is quite positive about it.
  Reply With Quote
Old 16th October 2004, 01:25 AM   #9
diyAudio Member
 
Lazyworm's Avatar
 
Join Date: Nov 2003
Location: Stockholm in Sweden
Send a message via ICQ to Lazyworm
Actually!
I have got close taken picture from inside the Model12 amp and know what components that are connected to each one of the
12LM3886.

I did start (with help from another friend on this forum) to do a schedule on it a few days ago and I think it will be ready to do a PCB from in another few days. I have changed a few components and redid the unbalanced/balanced step on it.

I think it will be a really nice sounding amp in around 200W 8ohm and 370W 4ohm, and it will be safe to drive down below 2ohm.

Including a 2*1000VA from germany and 20*15000uF caps
And the 24 pieces of LM3886 it will cost around 650US + alot of time to build.
  Reply With Quote
Old 16th October 2004, 01:29 AM   #10
diyAudio Member
 
Peter Daniel's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Send a message via AIM to Peter Daniel
Why don't you read some of the reviews of GainCard:

http://www.sakurasystems.com/reviews/reviews1.html
http://www.sakurasystems.com/reviews/reviews3.html
http://www.sakurasystems.com/reviews/reviews6.html
http://www.dagogo.com/47LabGaincardS.html

A well implemented Gain Clone can sound even better. Modesty prevents posting reviews of my amps
__________________
www.audiosector.com
Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it. - JC
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Has anyone compared the Chip amps against Class T amps? soongsc Chip Amps 3 24th July 2005 12:50 PM
Pictures of my Leach amps pip Solid State 16 6th March 2005 07:41 PM
Chip amps compared dfolson Chip Amps 69 14th November 2004 09:20 PM
Leach Amps PCB Artwork wopo Solid State 18 26th April 2004 03:06 AM
Has anyone compared the AKSA amps to any of the Aleph amps? Erik Johansson Solid State 4 30th May 2002 12:51 AM


New To Site? Need Help?

All times are GMT. The time now is 05:56 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2