Suggest me a preamp for my F4! - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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 20th September 2010, 01:43 PM   #1
diyAudio Member
 
Join Date: Sep 2007
Send a message via MSN to giacomo_pagani
Default Suggest me a preamp for my F4!

Hello folks, I'm a happy owner of an F4 which I built a few years ago. I really dig it, and I'm using an Audible Illusions M3A preamp.

They sound amazing to me, together, but even if the M3A is well known for its high ouput, it still isn't quite enough to express the full potential of the F4. I find myself turning the knobs full clockwise, and sometimes it just isn't "enough", or other times it makes the preamp itself distort a bit too much. I'm a bit sad, because I really like it, but it just isn't as usable as I'd like...

So, taking advantage of some upcoming spare time, I'd be willing to build an adequate preamp to drive the F4 at its full potential.

I've done some research but I'm not sure, and I've been a bit out of the scene in the last couple years, and that doesn't help either; it looks to me like the Pumpkin Preamp is the best shot. Is that so, or are there any other serious competitors, well suited for an F4?

Price is a bit of an object here, but I don't want anything that will make me miss the Audible Illusions... So, I just want to build something good. I hope it's possible to find a project which is both good sounding and easy to put together...

Thank you in advance for your help

Giacomo
  Reply With Quote
Old 20th September 2010, 01:56 PM   #2
Banned
 
Join Date: Nov 2006
Location: Torpoint
I'm thinking the same thing with my Aleph4.

I don't want to introduce anything into the signal path that will destroy the beauty of my set up.

I am using an Arcam CD36 with a 100K Ladder Attenuator Passive Pre-Amp.

My idea is to build a VERY HIGH-END line amplifier but I'm hunting for ideas from the forums.

As far I can ascertain I won't go too far wrong with an AD797 Ultra Low Noise Op-Amp as long as I am very careful with layout and use a precision low noise power supply.

Pre-Amp designs other than RIAA designs seem to be very thin on the ground.

Any leads would be very helpful. NO TUBE DESIGNS PLEASE.
  Reply With Quote
Old 20th September 2010, 02:44 PM   #3
Marra is offline Marra  United Kingdom
diyAudio Member
 
Join Date: Nov 2009
Location: Near Lincoln
Why not try Salas's DCB1 buffer. I've just built one for use with my Aleph 5 clone and it takes nothing away in fact the detail and dynamics are superb. As you are using a passive pre I don't think you would be dissapointed.




Quote:
Originally Posted by Andy5112405 View Post
I'm thinking the same thing with my Aleph4.

I don't want to introduce anything into the signal path that will destroy the beauty of my set up.

I am using an Arcam CD36 with a 100K Ladder Attenuator Passive Pre-Amp.

My idea is to build a VERY HIGH-END line amplifier but I'm hunting for ideas from the forums.

As far I can ascertain I won't go too far wrong with an AD797 Ultra Low Noise Op-Amp as long as I am very careful with layout and use a precision low noise power supply.

Pre-Amp designs other than RIAA designs seem to be very thin on the ground.

Any leads would be very helpful. NO TUBE DESIGNS PLEASE.
  Reply With Quote
Old 20th September 2010, 02:56 PM   #4
jimbo51 is offline jimbo51  Australia
diyAudio Member
 
jimbo51's Avatar
 
Join Date: Nov 2007
Location: Melbourne
F4 + =

So I've heard.

Pumpkin preamp - More Boring Making Thread
  Reply With Quote
Old 20th September 2010, 03:03 PM   #5
diyAudio Member
 
chlorofille's Avatar
 
Join Date: Jul 2008
Location: Malaysia
Try Rod Elliot's P37A discrete SS preamp. I have one right now and it provides beautiful gain, crystalline-clear treble, and fantastic image precision. Don't expect warmth/relaxed presentation though. It is quite ruthless and will reveal everything.

It took me 2 hours to wire them point to point, and the components cost 5 bucks.
To date, it is the highest perfoming, lowest cost preamp I have ever seen. No need for audiophile parts.
  Reply With Quote
Old 20th September 2010, 03:20 PM   #6
Banned
 
Join Date: Nov 2006
Location: Torpoint
Do you have any leads for the SALAS DCB1 BUFFER?

I'm not over keen on Rod Elliot's designs, they all seem to try to keep cost at a minimum with no real attention to detail. Rod, if that's incorrect, then please accept my apologies but the articles do nothing for me in their advertising.
  Reply With Quote
Old 20th September 2010, 03:51 PM   #7
Magura is offline Magura  Denmark
diyAudio Member
 
Magura's Avatar
 
Join Date: Oct 2003
Location: Denmark, Viborg
A B1 for an F4 is not gonna fly, as you will have no gain from the B1.

As suggested earlier, the Pumpkin is the way to go. It is made with great attention to detail, yet without breaking the bank.


Magura
__________________
Everything is possible....to do the impossible just takes a little while longer.
www.class-a-labs.com
  Reply With Quote
Old 20th September 2010, 04:40 PM   #8
DaveM is offline DaveM  United States
diyAudio Member
 
DaveM's Avatar
 
Join Date: Feb 2003
Location: Vermont
IF you want to go with tubes there is the Impasse which was also built as a high gain pre to be used with the F4
  Reply With Quote
Old 20th September 2010, 04:41 PM   #9
Marra is offline Marra  United Kingdom
diyAudio Member
 
Join Date: Nov 2009
Location: Near Lincoln
Default Salas hotrodded blue DCB1 build

I hope this works Andy.

Marra
  Reply With Quote
Old 20th September 2010, 04:43 PM   #10
Marra is offline Marra  United Kingdom
diyAudio Member
 
Join Date: Nov 2009
Location: Near Lincoln
Sorry Andy the link did'nt work. Just search for the previous posts link
  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
suggest about 9002/vt202 preamp please jp74 Tubes / Valves 0 1st June 2009 08:17 AM
Preamp suggest, please. kacernator Tubes / Valves 18 27th February 2008 08:29 PM
what 8-pin tubes would you suggest for an aikido preamp? jarthel Tubes / Valves 3 5th March 2007 11:54 PM
Suggest a preamp for cd/tuner BeerCan Tubes / Valves 2 16th June 2005 01:14 PM
Please suggest a preamp HiFiNutNut Solid State 5 28th May 2004 07:08 PM


New To Site? Need Help?

All times are GMT. The time now is 10:44 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