My_Ref Fremen Edition Interest/Group Buy - Page 2 - diyAudio
Go Back   Home > Forums > Commercial Sector > Group Buys

Group Buys Members group buys

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 8th February 2013, 12:38 PM   #11
lucylu is offline lucylu  England
diyAudio Member
 
Join Date: Jun 2008
Location: England
Hi i have the my ref c ultimate bom and its a great little amp very happy with it ,,is it worth building this one , is it that much better,,, .

Dario i must commend you on all the work you have put in over what must be a couple of years with this amp outstanding regards john
  Reply With Quote
Old 8th February 2013, 01:34 PM   #12
Just DIY!
diyAudio Member
 
pinnocchio's Avatar
 
Join Date: Sep 2010
Location: Montreal
I'm a little curious and would like some feedback about this amp. So anyone can answer this question or please redirect me to the right thread.

Since this is a LM3886 design, how does it differ in sound from the standard layout that everyone else does (specsheet, etc...) and that we have been seeing everywhere for the last many years.

Does it still has the monolithic 3886 signature or the design really makes it in a different league? Can the LM318 be changed to a higher performing opamp or it is not needed to go overboard?

Thanks
Do
__________________
PREAMPs : AMB α10 + JC-80 clone | Balanced DCB1 | LDR3x | AMPs: AMB β24 | Aleph 5 | VSSA | ML-2 | Fetzilla | Telos 390 Clone | My_Ref FE
DACs : TPA Buffalo II + OPC's NTD1 I/V | TPA OPUS + IVY III Speakers : Jim Holtz Statements | Astasia SD | Tubasson Mark 2
  Reply With Quote
Old 8th February 2013, 03:41 PM   #13
diyAudio Member
 
Join Date: Oct 2010
Location: the Matrix? Maybe?
Quote:
Originally Posted by pinnocchio View Post
Since this is a LM3886 design, how does it differ in sound from the standard layout that everyone else does (specsheet, etc...) and that we have been seeing everywhere for the last many years.
For a short answer I recommend you take a look here: Mauro Penasa MyRef vs simple LM3886 circuit and also at the associated link on the second (#2 post) on that thread. The link will lead you to the original discussion which is the presentation of the original circuit by Penasa.

I do recommend you take a thorough read of the original thread. It contains a lot of information and feedback, which i know may be a bit annoying to read fully but, it does answer most of the questions relating to the amp.

This link was also very useful for me when i was considering building the my ref: MyRefC build guide

Remembering this is all information relating to the My_Ref rev C. This is not feedback on this specific version (the one the groupbuy is for). Just making clear.

Last edited by ilovepicles; 8th February 2013 at 03:51 PM.
  Reply With Quote
Old 8th February 2013, 06:40 PM   #14
Reality first!
diyAudio Member
 
ClaveFremen's Avatar
 
Join Date: May 2005
Location: Milan, Italy
Hi D9,

Quote:
Originally Posted by pinnocchio View Post
Since this is a LM3886 design, how does it differ in sound from the standard layout that everyone else does (specsheet, etc...) and that we have been seeing everywhere for the last many years.
All My_Refs are way better than a plainGainclone.

You can read my opinion here.

Quote:
Originally Posted by pinnocchio View Post
Does it still has the monolithic 3886 signature or the design really makes it in a different league?
No, My_Ref's sound signature is dominated by the LM138's one.

The LM3886 is used as an Howland current pump.

It's somewhat similar to Quad 405 approach, the goal is the same: approaching class A performance on crossover distortion.

The My_Ref it's, basically, a chip implementation of De Paravicini's Musical Fidelity A-370.

LM318's sound signature and the topololgy gives a really remarkable sound, not distant to best valve or class A discrete implementations.

The My_Ref performance, though, like the MF A-370 one, can be vastly improved by the LM318 PS (In fact the better sounding A-370 II included a discrete regulator for LM318 PS).

The Fremen Edition improve that area and include other significant improvements.

Quote:
Originally Posted by pinnocchio View Post
Can the LM318 be changed to a higher performing opamp or it is not needed to go overboard?
The LM318 is integral part of the A-370/My_Ref topology and can't be easily swapped withoud redesigning completely the compensation.
__________________
Dario
ClaveFremen "Bailando Salsa en el Sietch"
  Reply With Quote
Old 8th February 2013, 07:13 PM   #15
mkc is offline mkc  Denmark
diyAudio Member
 
Join Date: Jun 2002
Location: Denmark
Hi Dario,

+1

Thanks,
Mogens
  Reply With Quote
Old 8th February 2013, 07:38 PM   #16
diyAudio Member
 
Join Date: Nov 2009
Location: In a house..sometimes at work.
Hi Dario,

I am in.

kind regards,

Ron
  Reply With Quote
Old 8th February 2013, 07:38 PM   #17
Just DIY!
diyAudio Member
 
pinnocchio's Avatar
 
Join Date: Sep 2010
Location: Montreal
You had me at "better than a plainGainclone"

I'm in!
__________________
PREAMPs : AMB α10 + JC-80 clone | Balanced DCB1 | LDR3x | AMPs: AMB β24 | Aleph 5 | VSSA | ML-2 | Fetzilla | Telos 390 Clone | My_Ref FE
DACs : TPA Buffalo II + OPC's NTD1 I/V | TPA OPUS + IVY III Speakers : Jim Holtz Statements | Astasia SD | Tubasson Mark 2
  Reply With Quote
Old 8th February 2013, 07:45 PM   #18
Reality first!
diyAudio Member
 
ClaveFremen's Avatar
 
Join Date: May 2005
Location: Milan, Italy
Hi Mogens,

Welcome on board!

Quote:
Originally Posted by Justadude View Post
I am in.
Hi Ron, please fill in the spreadsheet.

Quote:
Originally Posted by pinnocchio View Post
You had me at "better than a plainGainclone
__________________
Dario
ClaveFremen "Bailando Salsa en el Sietch"
  Reply With Quote
Old 8th February 2013, 08:07 PM   #19
diyAudio Member
 
voxxonline's Avatar
 
Join Date: Aug 2012
Location: Bexleyheath, Kent
Send a message via Skype™ to voxxonline
It is going to be my first build of amp. Been following the RC thread and I am so much excited about it
__________________
How to find time to finish my projects ?
  Reply With Quote
Old 8th February 2013, 09:04 PM   #20
Reality first!
diyAudio Member
 
ClaveFremen's Avatar
 
Join Date: May 2005
Location: Milan, Italy
Quote:
Originally Posted by voxxonline View Post
It is going to be my first build of amp. Been following the RC thread and I am so much excited about it
It's not difficult to build, if you have good soldering abilities it will be a lot of fun
__________________
Dario
ClaveFremen "Bailando Salsa en el Sietch"
  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
My_Ref Fremen Edition RC - Build thread ClaveFremen Chip Amps 1239 12th May 2014 06:09 PM
My_Ref Fremen Edition - Beta build/Fine tuning ClaveFremen Chip Amps 1523 1st December 2013 11:16 AM
My_Ref Fremen Edition - need help on PCB evaluation ClaveFremen Chip Amps 450 23rd October 2013 03:38 PM
Last My_Ref Fremen Edition RC boards for sale ClaveFremen Swap Meet 3 4th December 2012 01:04 PM
my_ref revC group buy (Mauro Penasa LM3886 design) schro20 Group Buys 650 17th October 2010 11:42 PM


New To Site? Need Help?

All times are GMT. The time now is 03:04 AM.


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