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post #1 of 13 (permalink) Old 06-02-2006, 01:08 AM Thread Starter
 
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preamp question

I'm aware there's are amp head preamps, and rack preamps. But is there any sense to plug in a rack preamp (ie. ADA MP-1) into a tube amp head? Are preamp racks just a cheaper alternative to amp heads?

Right now my setup is as follows

guitars -> DS-1 ultra -> rocktron chameleon (preamp) -> return channel of crappy peavey SS amp (to bypass amp controls such as EQ).

I'm planning to sell the chameleon for a ADA MP-1, and then buying a 2x12 cab. Would that work the same as say...a laney GH50 amp head into some cabs?

thanks in advanced.
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post #2 of 13 (permalink) Old 06-02-2006, 01:24 AM
 
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Re: preamp question

"Are preamp racks just a cheaper alternative to amp heads"

no, think of them as a really powerful distortion pedal in a rack case. They have no amplification on there own (mabie enough to power headphones, if that) you still need an amp for it to go in, it could be a FX loop of a tube head, or a power tube amp such as the Mesa boggie 2:90 or a cheeper alternative such as the Peavey 50/50.
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post #3 of 13 (permalink) Old 06-02-2006, 01:39 AM
 
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Re: preamp question

yeah a preamp, whether it's rackmount or in a head casing still needs a power amp to amplify its signal. the ada sounds best with a tube power amp btw. i'd suggest the same thing that lefty robb did and get yourself a peavey classic 50/50 or 60/60 power amp. i got the 60/60 cheap off **** and it sounds great.
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post #4 of 13 (permalink) Old 06-02-2006, 01:43 AM
 
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Re: preamp question

Running a proper tube preamp into the input of a tube head almost invariably results in an impedance mismatch which means usually a thin and harsh sound - what usually DOES work is bypassing the tube amp's own pre-amp section and plugging the output of the rack preamp in to the effects loop return of the amp head - does that make sense?
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post #5 of 13 (permalink) Old 06-02-2006, 03:52 AM
 
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Re: preamp question

If you mean "put it in the FX loop" then yes, it does..I personally wouldnt use a head, it would color the sound of the preamp to much, even bypassing its own internal preamp. But some people love putting it in the loop of a SS Marshalls.
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post #6 of 13 (permalink) Old 06-02-2006, 03:31 PM Thread Starter
 
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Re: preamp question

ah thanks for clearing it up guys. A few questions about the ADA MP-1 though

1. I've read that some complain about the amount of noise the MP-1 makes. How true is it? And if so, is there anything out there I can use to fix it? (rocktron HUSH?)

2. There's not a lot of efx on the MP-1, such as reverb and delay. I also read that the EQ section on the MP-1 isn't that great. I was wondering if it's wise to hook up both the MP-1 and the chameleon in the same chain so I can get both the MP-1 distortion/chorus and the chameleon's reverb/delay/EQ. Or is it just better to get separate pedals for that?

Thanks again!
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post #7 of 13 (permalink) Old 06-02-2006, 03:46 PM
 
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Re: preamp question

The noise only comes from gain, like any preamp. I have a Rocktron chameleon and it just doesn't sound great at all with the MP-1, its far to muddy, but the HUSH works good. I have an old delay unit that I use after it, and it sounds much better. Heres the reDONKulous setup...

Guitar -> TS909 -> DS-1 -> DBX gate/comp -> ADA MP-1 -> Delta Labs delay unit -> DOD EQ rack -> BBE 362 Sonic Max -> other side of DBX Gate -> MosValve Poweramp -> Carvin Legacy 2x12
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post #8 of 13 (permalink) Old 06-02-2006, 04:00 PM
 
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Re: preamp question

Quote:
Originally Posted by btangel
2. There's not a lot of efx on the MP-1, such as reverb and delay. I also read that the EQ section on the MP-1 isn't that great. I was wondering if it's wise to hook up both the MP-1 and the chameleon in the same chain so I can get both the MP-1 distortion/chorus and the chameleon's reverb/delay/EQ. Or is it just better to get separate pedals for that?

Thanks again!
You could do that, but if you're not going to use the preamps on the chameleon why not get a dedicated fx unit instead, like a rocktron intelliflex/expression?
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post #9 of 13 (permalink) Old 06-02-2006, 04:22 PM
 
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Re: preamp question

The rocktron intelliflex might be better, but a G-Major would probably be the way to go.
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post #10 of 13 (permalink) Old 06-02-2006, 06:36 PM
rgr
 
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Re: preamp question

Feeding one preamp into another usually doesn't work that well, I'd look into a dedicated effects unit.
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post #11 of 13 (permalink) Old 06-02-2006, 06:41 PM
 
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Re: preamp question

yeah, its a really bad idea, i've done it and it sounds like absolute ****, and noisy as all hell.
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post #12 of 13 (permalink) Old 06-02-2006, 06:59 PM Thread Starter
 
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Re: preamp question

yea that's what I figured. Thanks for the advice guys. Really helped me out a lot.
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post #13 of 13 (permalink) Old 06-02-2006, 07:04 PM
 
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Re: preamp question

Wow, thanks to this thread, I just blew the dust off my old ENGL 520, cranked her up, put her in this config:

Guitar -> TS808 -> ENGL 530 -> BBE -> Gate/Comp -> EQ -> BBE -> Power amp -> Legacy Cab

And it sounds like 100X better than the ADA MP-1. Probably because the Engl is a 3 tube beast, and its all analog from what I can tell. Its less harsh with a tighter distortion, and tones down better with the volume knob (Think Blue Powder) and better Harmonic squeals.

Last edited by Lefty Robb; 06-02-2006 at 07:50 PM.
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Tags
amp head , amp heads , distortion pedal , peavey classic , power amp , rack pre , rocktron chameleon , rocktron hush , tube amp , tube head , tube power amp , tube preamp

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