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My New Manely Steelhead

I just received my new audiogon Manley Steelhead preamp. I let it warm up and I checked the tubes to make sure they were seated properly. I put it into the rack and turned it on. Lights are always a good sign. I turn the knob to MM and 47K for my cartridge Grado The Statement. The only settings I know to change. I played it for a couple hours thinking this sounds dry analytical. It did not have any life. I switched from a ARC PH3 and I was missing the romance of the PH3. The Manley does top to bottom better but lifeless. I looked at the Manely thinking what am I going to do. Sell it, but I just bought it. Then I noticed the gain setting was on 65. I changed it to 55 and immediately the sound stage grows wider and the music comes alive. Wow I just wasted 2 hours. The PH3 is now going. What a great unit. I hope nobody else makes the same mistake.
coxhaus
dougdeacon
3,338 posts
 
Sounds like the Manley's 65db setting was close to overloading your next gain stage. Gain/impedance matching between amplification stages is vital, as you just demonstrated. Too much can be as bad as too little.

The Steelhead's a fine phono stage, pretty close to the best I've heard. I don't know what tubes the owner had in the one he brought over to demo in my system, but there's no question rolling will alter the sound of any tube amp or preamp. Definitely worth trying in any high end unit.

Enjoy!
mtrspt5
13 posts
 
I also concur that you should be able to tailor the sound to your liking with this unit. I also found the Tung Sol 5687 or the Raytheon 5687 the best tubes for that slot. I'm running pinched waists in the 6922 slot and have stopped looking there, except for a a spare pair. Yes....the PQ's and SQ's can be as good, but for me the pinched waists had a little more of the harmonic overtones (cymbals, decay,etc.) I like.

It will depend on your preamp and rest of the system of course, but there are plenty of tubes to try out.
apachef1
164 posts
 
Tube rolling never ends. I tried some Tele's 6922 and no real significant change It seems the 5687 are the key tubes to roll into the Manley Hold out for the Tungsol black plates from the late 40's Simply the best in the Manley

The 6922/6dj8 Bugles Seimans Tele's and so on will be better than the stock tubes but from one tube to another I'm not sure there is any real significant change. So I did stop with the Bugle Boy's, I have a good supply of them.

TheSteelhead is a tweakers dream!
lloydc's avatar
lloydc
751 posts
 
despite its low output, the Statement is not like a moving coil, and is incompatible with mc transformers such as those in the Steelhead. The PH3 and the Steelhead have almost enough gain (without engaging the mc transformers, in the case of the Steelhead) for the low ouptput Grados, but not quite, unless (I suppose) you have a really sensitive amp. Finding a good phono pre for the Grados is not easy. I would be interested to hear what people who have solved this issue are using.
coxhaus OP
231 posts
 
Is there a better phono preamp for the Grado Statment?

I was looking and I could not find any Tungsol black plates quads, only pairs. Do they have to be ultra low noise like the 6922?
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