Options to replace Supratek Chennin Pre


Looking for suggestions for a replacement pre for my Supratek Chennin Preamp. I absolutely love most everything about this pre except in my system it is slightly lean. I would like to stay with tubes unless the nature of tube pres is to be a little lean. HT pass thru is a requirement. The Supratek has a HT pass thru and I love how simple it is to backdoor HT through the hi fi. Price range will be about $3,500.00 new or used. I want something that will retain or exceed the holographic, open, precise sound stage that the Supra offers but with more slam and extension in the bass. I recently pulled the pre out of the system and ran direct from the wadia 861 and bass slam was improved to an exceptable degree but obviously lost all benefits of tubes.
System:
Wadia 861
Supratek
Parasound JC 1s
Vandy 3A sig
2WQ subs
Audioquest Cheetah, Cardas Golden Cross intercon
Alphacore MI2 spk cable bi wired
braro
Well after some more hrs and different music with the RCAs I have come to the conclusion that they are superior to the EH in all areas except 1. Acoustic bass lacks focus at the bottom of the register with the RCAs. The bass does have more weight but unfortunately its not controlled. So what to do? I suppose the Ken-Rads may be the panacea but the longer Im in this hobby the more I realize I may never get the "right" sound and that everything is a compromise. I really don’t want to just keep spending money and hope I find the right combination. BUMMER. I suppose I could just listen to music that doesn’t have acoustic bass :) HA.
Braro, you haven't mentioned what rectifier tube you are using. They make a huge difference in extracting the best from all of the other tubes in the Supratek.

The Sovtek 5AR4 is junk. For $40 you can step up to the Bendix 6106. You'll find better tone top to bottom, and better bass as well. For real bass punch, a Philips Miniwatt GZ34 will shock you.

Also, if you're running the stock Sovtek 5881, replace with the Sovtek KT-66. Again another $40. Big pay off.

Those two additions will help your RCAs show their stuff.

Best wishes,
amen - the right rectifier tube changes everything on every pre and amp I've owned - not all that many but I am starting to develop an opinion!!!
Running all stock tubes except the RCAs of course. Ok stupid question.... the rectifier tube is the one in the power supply right? I will try replacing the rectifier and Sovteks. Ikkyu2 are the tubes your referring to NOS?
The Bendix 6106 and 5AR4 rectifier make a substantial change to the Supratek (I prefer the 6106). And NOS regulators make a MUCH bigger difference in my Chardonnay than any NOS 6SN7!