new preamp products

see this page for updates on new preamps . . .
www.tubes4hifi.com/pre11.htm

SP8 phono & line stage with tube power supply
SP9 line stage with tone controls
SP12 premium line stage only
PH6 phono only (same as SP8 phono section and PAS3-Zmod upgrade)
PH9 hi-quality phono only
PH-11 premium all tube phono only pre
PH-12 premium JFET+ tube phono only pre

The phono preamps look impressive. I was on your site a little bit ago and saw a new mod kit for the Dynaco PAS3 that looked like the PAS3Z kit except it had a different linestage that had tone controls. I recently went back to your site to try and find that kit again and it seems to be gone???

Whats up, is the kit still available?

Is there any way you can add a volume pot to the phono preamps and therefore bypass a preamp altogether? I like to run a a phono stage straight into a power amp.

Thanks Bob for your input. Adding a volume control to the amp would be a logical move except I don't have a ST-70. I'm in the process in putting a ST-35 together (waiting for some OPT'S), so maybe your volume pot would work with this amp as well?

I have a phono stage right now with volume control but in the future I would like to experiment with other stages and since most phono preamps have no provision for adjusting volume, then maybe a volume control on the ST-35 (if it would work) would be the best option.

Does anyone here have a ST-70 w/volume control that has run a phono preamp straight into it? Does it work/sound better than running it through a regular preamp and then to the amp? I think I remember in another forum Bob, where you ran a CD player into your amp, but have you tried a separate phono stage into the amp?

Thanks again Bob. Good to know that I could add a volume control to an ST-35 down the road or at time I get around to building it. So I could bypass a typical control preamp and plug any phono preamp into the ST-35? I'm guessing that the volume control on the amp basically takes place of the same on a typical preamp. Enough gain, as little or less noise and so on? I only use a turntable so a preamp is not necessary in my configuration. I like things really simple.

Thanks Bob for the replies. My only other question (or request) would be: is it possible to put up a wiring diagram for a volume control for an ST-35 on this thread? I notice you have one for the ST-70 on a previous thread.

Thanks

Hi Capt Coco . . .
looks like Bob got back to you 3-4 times, I wanted to answer your question about adding a volume control to a phono preamp. Doing that is possible, but because of the output impedance and very small signal strength coming out of the phono stage, it would need a buffer amp before a volume control, otherwise it could affect the frequency response and load down the circuit.
Putting a volume control on the input of a power amp though is very simple and very effective, as Bob's answers have already shown.
Roy