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rotel power amps

Discussion in 'AV Pre-Amp/Processors & Power Amps' started by icequake2000, Aug 20, 2001.

  1. icequake2000

    icequake2000
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    Is there any difference between the rotel RB985mk2 THX and the rotel RMB1075 THX other the 1075 having an etra 10 watts per channel
     
  2. Reiner

    Reiner
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    It's bigger!? <img src="wink.gif" border="0">

    Sorry, couldn't resist .... actually I am considering (only considering) as well to add a power amp, either the 985x2 (bi-amping) or 1075x1.

    Any idea/suggestions or is it a bad idea afterall to do this bi-amping thing? *)

    Could buy one 985 now and another one later, if it's still available that is ...

    <br />*) I know the theory behind it and how it (is supposed to) work/s.
     
  3. russraff

    russraff
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    "Icequake2000"<br />I had the 1075 (and the 985 mkII briefly), and the only difference, other than the size of the case, was that the capacitors were of higher quality in the 1075. I happened to meet the Rotel Rep. while he was in a shop called Lintone Audio, and he said that the amps were very similar, but the 1075 was a "better implemented design". The case is larger, but the power supply inside seems to be the same as the one in the 985mkII. Also, if you read some of the online reviews of the 985mkII, it was well capable of 120W/chnl. Basically, go for the 985mkII for what the difference is.

    Reiner,

    One 985 is good, two should be out of this world. <br />Not sure on the technicalities, but the 1095 seems to be two 985's glues together. The 1095 has two of the same toroidal power supply found in the 985. Perhaps the 1095 is in fact a one box biamp of the 985? Of course, I could be talking rubbish.

    Russell
     
  4. Guest

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    Reiner.<br />I use two 985's a mk1 and a mk2 (amoung the 4 power amps i use) the mk1 drives 2 pairs of 4 ohm kef tdm34ds rears, mk2 bi-amps the front 4 ohm left and right and find them to be a vast improvement over most "mid-priced" integrated A.V amp sections (certainly more "grunt" than say the Denon 10se which to is THX rated) and have absolutely no qualms in recommending them (i currently use them with a 3801) and when i eventually get around to getting a Tag will be in no rush to replace them - utterly reliable, completely stable with my "difficult" speakers and pleasing in sonic character - which is neither to warm or harsh in any way.<br />The 985's use a 1.25KVA toroidal whereas the 1075 uses a 1.5KVA, however the output devices for both amps are rated at exactly the same current and power delivery so if there is any "improvements" made to the output devices (at all?) then they are based on "other" reasons than the slightly up-rated output of the 1075. I can tell you unequivocally that i could hear absolutely no difference in sonic character between the two and put the difference down to replacing the 9 series with the 10 (as Rotel and all others do) with a more cursory "type" glance at modifications, anyway the end result was if there is a difference it would be hard to prove it was a "sonic" difference.<br />Great amps - buy with confidence.
     
  5. Reiner

    Reiner
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    Cheers, I will head down to my dealer and see if he still has some 985 available to borrow for a home audition.<br />The 1075 would perhaps be a good choice but I prefer the smaller size of the 985, two of them fit into my rack where as the 1075 would not (top level already occupied by my DSP-A1).<br />Since you say there is not much (or no) difference you just support my initial idea of two 985.

    But let's start with one first ... <img src="biggrin.gif" border="0">
     

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