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  1. #1
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    the search for a tube preamp

    Well, I've got a set of 4311 b's, a Crown PS200 on the way (thanks Triumph Don), now I'm looking for a tube preamp.

    Preferably something from the same era or close to it, must have a phono stage, preferably with tone controls. Was thinking AR SP3 might fit the bill.

    But I really have no idea and am open to suggestions. It could also be something modern, there seems to be a dizzying array of stuff out there. I'd also prefer something north american, to go with the other north american stuff in the chain. But that's not a deal breaker and price is a consideration too. Don't really want anything that outperforms the other gear in the chain.

    Ok, once again, thanks for all suggestions that may be forthcoming!

    Cheers,

    Bernie

  2. #2
    Senior Member jerry_rig's Avatar
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    The SP-3 is very nice. I've been thinking about parting with my SP-8. Many consider it a classic as well.
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  3. #3
    RIP 2013 Rolf's Avatar
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    Tubes need to be adjusted all the time. Why not go for a transistor pre? They can do a better job that a tube. Remember Mono?

  4. #4
    Senior Member Krunchy's Avatar
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    Quote Originally Posted by Rolf View Post
    Tubes need to be adjusted all the time. Why not go for a transistor pre? They can do a better job that a tube. Remember Mono?
    Hi Rolf!
    I am sorry but I have to dissagree with you on that, at least as far as integrated tube amps go (at least the "newer ones", I dont know about pre-amps first hand). I have a few tube amps and a couple of hybrid integrated amps that dont need any adjusting at all. Personally I love the sound of tube amps, I've been playing with a couple of jolida models which are not crazy expensive at all and I have to say that they are really clean sounding and produce a lovely quality of music.

    Dont forget that sound can often be quite subjective as we all know. I have quite a few good ss amps as well and obviously there is a difference in the sound they reproduce but that is not a bad thing. "We've" (by that I mean the members of the forum) had this discussion before even the vinyl vs cd and the bottom line is we all have varying tastes in what we like. To make a blanket statement like that I dont think is fair.
    I have a jolida 102B amp which is not a boutique tube amp (price wise) but the thing sounds pretty damn good to me. lately I've been switching out the stock tubes (electro-harmonix, which are not horrible but you can do better) with some NOS tubes and the difference is incredible. They are very detailed, crisp, clean and not lacking in bass at all. This particular amp only has to be biased/adjusted once or maybe twice a year if that, an exercise which takes all of 1 minute. I have also been rolling some NOS tubes into the hybrid amps with incredible results, the vincent sv-236 has never sounded better, it blows away anything else I have at the moment which includes some adcom 5802As, crown ps 400 and some other ss amps. I still like the sound of ss, in particular I like the adcom on the LF for the 4345s but the tube amps are no slouch, period.

    This, of course, is my own personal opinion & preference, I love tubes & I dont feel like I am loosing anything by using them, on the contraray, I feel that I have increased my enjoyment of music with them.
    My point is (not to attack you ) that Bern1 might actually have a genetic and or medical pre-desposition to tubes hence his desire to look into a tube pre amp.

    Bern1, I dont know what your budget for this pre amp is but I am sure there is something out there that just might be what you are looking for, if not you can always sell it & look into getting one of the many ss pre amps that have been discussed on this forum which I myself would not mind auditioning.

    Enjoy the hunt, thats half the fun
    Just Play Music.

  5. #5
    Senior Member martin_wu99's Avatar
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    Quote Originally Posted by Rolf View Post
    Tubes need to be adjusted all the time. Why not go for a transistor pre? They can do a better job that a tube. Remember Mono?
    Rolf,who told you that?you must take things people say with grain of salt
    BTW,i like your big dog
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  6. #6
    RIP 2013 Rolf's Avatar
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    I just remember having an Audio Research Tube amp, and on it there was meeter's and there was pots that needed to be adjusted to set the meters at a certain point so the amp should sound the best it could. This was needed quite often.

    Anyway, sorry to break in here and destroy the discussion. I'm out.

    Quote Originally Posted by martin_wu99 View Post
    Rolf,who told you that?you must take things people say with grain of salt
    BTW,i like your big dog

  7. #7
    Senior Member martin_wu99's Avatar
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    Quote Originally Posted by Rolf View Post
    I just remember having an Audio Research Tube amp, and on it there was meeter's and there was pots that needed to be adjusted to set the meters at a certain point so the amp should sound the best it could. This was needed quite often.

    Anyway, sorry to break in here and destroy the discussion. I'm out.
    Just joking,the discussion need you
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  8. #8
    Senior Member Cooljjay's Avatar
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    Quote Originally Posted by Rolf View Post
    I just remember having an Audio Research Tube amp, and on it there was meeter's and there was pots that needed to be adjusted to set the meters at a certain point so the amp should sound the best it could. This was needed quite often.
    Those pots are found on a lot of tube amplifiers not pre amps. They are to adjust the BIAS on each tube. But you can find fixed BIAS amps that need no adjusting at all. You just have to make sure all the resistor/capacitors are up to spec. Some better pre amps do need to be adjusted but the adjustment is for line level. It took me awhile to adjust the line levels but once set it is fine. Tube amps and pre amps are just so pretty to look at too They also keep the listening room nice and toast on those cold days

  9. #9
    Senior Member martin_wu99's Avatar
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    Quote Originally Posted by Rolf View Post
    I just remember having an Audio Research Tube amp, and on it there was meeter's and there was pots that needed to be adjusted to set the meters at a certain point so the amp should sound the best it could. This was needed quite often.

    Anyway, sorry to break in here and destroy the discussion. I'm out.
    Rolf,follow me studying Chenglish

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  10. #10
    Mctwins
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    Quote Originally Posted by Rolf View Post
    Tubes need to be adjusted all the time. Why not go for a transistor pre? They can do a better job that a tube. Remember Mono?
    What?????? My tube preamp wich is McIntosh C2300 has none of adjustments what so ever. The best preamp I ever owned. As for my McIntosh amps MC275 there is no adjustments as well.

    If someone want tube pre this would be the one.

    Thanks

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    Thanks for the ideas and suggestions, keep them coming! There is a dizzying number of options out there. I realize I'm late to this party, gave up on a Marantz 7 and it seems even the SP3 is a rare and relatively expensive bird nowadays.

    Just for a frame of reference, the last time I went out to get some good audio equipment it was 1980 and I bought a Quad 303 and a pair of Rogers LS35A's which I still have. But I've always also loved the big JBL sound and that's what I'm going for now....

    I also know that a solid state pre is the logical choice, but being a tube guitar amp guy I've always been interested in tube stuff and it seems that a tube pre would get me at least halfway there. I've been entertaining an array of vintage tube guitar guitar amps for 40 years now and I think I can handle dealing with a pre but I'd really rather not get into buying, retubing and tweaking a couple of monobloc 4x EL34 amps...

    Also, since this is a project that has no logical basis, I want to keep everything north american if I can. So, I'm now thinking along the the lines of a Dynaco PAS ....would that be a good match for the JBL's and Crown PS200? Seems affordable and tweakable....I can do some moderate tweaking.... what do you all think?

    Thanks, cheers and goodnight!

    Bernie

  12. #12
    Senior Member Cooljjay's Avatar
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    Its hard to find a good tube preamp. I've not had much luck finding many different choices. It seems by far the most popular are the PAS units, I have like 5 of them. I am currently using a eico HF-85 pre, it does sound nice but the dual volume pot is a PITA. It sounds nice but getting the channels equal with the dual volume is a pain. At higher volumes it is fine but at lower its horrible. I am going to switch over to a Lafayette KT600. These are suppose to be excellent pre amps from what I have read. They were designed by stewart hegeman and are side to be on the same levels of the citation and marantz 7. One problem you face with vintage tube pre amps is that they won't accept any of the newer high end AV cables. I want to use a pair of monster cables between the amps and pre, I had to eliminate the mic input in order to make enough room to add new connectors. Also they will always need to be rebuilt, the tubes are usually always good but capacitors and selenium rectifiers are always bad after sitting for 20+ years.

  13. #13
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    Solid State Preamp + Tube Effects

    If You want tube sound: why not place an effect box in the tape loop?

    SPL Channel One
    SPL Tube Vitalizer

    It has the advantage that You can remove the boxes from the signal path.

    ruediger

  14. #14
    Senior Member martin_wu99's Avatar
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    Just to try VTL and Manley tube,they are studio gear
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  15. #15
    Dang. Amateur speakerdave's Avatar
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    I don't have a sense of what your budget might be except noting the components already chosen. Frankly I don't think it makes a great deal of difference what preamp you use, except that I think tubes are a good idea because they will soften high frequencies a little. The Dynaco PAS 2 and 3 preamps are OK; I've used them in past decades. I think you want a PAS 3X with a solid state amp. As with some other preamps that have been mentioned, they are all quite old, not having been made since the mid-seventies and most of them that are around are older than that. The problem I see with them is that they are often bid up so high, because they are the subject of many mod scenarios, that other choices become reasonable, like the earlier Conrad Johnson PV series, like the PV-2, which I have used and liked.

    I agree with an earlier poster that the Audio Research SP8, my current preamp, is a fine preamp, but perhaps more than you are planning on spending.

    For solid state I would suggest Marantz (3300) or GAS Thalia; the latter I've used and liked. A lot of that old equipment is not plug and play anymore, and should be checked out by a competent (and sympathetic) technician.

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