Mullard CV4004 in CF ?

The good, the bad and the ugly.

Moderator: VelvetGeorge

Post Reply
New Member
Posts: 2
Joined: Wed Oct 04, 2017 12:57 pm
Just the numbers in order: 13492

Mullard CV4004 in CF ?

Post by framos » Sat May 19, 2018 11:31 am

Hi All!

I just got myself a pair of current production Mullard CV4004 to experiment.

The target is a 2204, with a TungSol RI in V1, Chinese 12ax7 in v2 and Sovtek LPS in v3.

First I tested the new tube in V1, but liked the TungSol better.

In V2, however, I liked how it sounded compared to the chinese. It seems to tighten the low end a bit, in a way I liked. Seems more clear.

So the same old question is: is it ok to use this tube in v2 (CF) ? I hear the TungSols and regular Mullards have problems in that cathode follower position, but what about the CV4004? :scratch:

Any experiences with this tube at this position?

Thanks in advance!

New Member
Posts: 35
Joined: Mon Feb 20, 2017 12:25 pm
Just the numbers in order: 13492

Re: Mullard CV4004 in CF ?

Post by harleytech » Sat May 19, 2018 7:07 pm

I have tried Mullard's and Tung-Sol's in V3 , But the one that works.. At least for me, Is the Sovtek LPS... I love it in that position..... The Sovtek LPS is in all 3 of my Plexi builds... I never tried a CV4004... Sorry... :scratch:

User avatar
Senior Member
Posts: 7176
Joined: Tue Dec 06, 2005 8:31 am
Location: Suffolk, England

Re: Mullard CV4004 in CF ?

Post by neikeel » Mon Jun 11, 2018 4:03 pm

A genuine Mullard CV4004 is very robust and can stand anything you throw at it.

I use them in the PI or in a modded amp in V1 to help with micro phonics.

Post Reply