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Conference hips::uk_audioo

Title:You get surface noise in real life too
Notice:Let's be conformist
Moderator:GOVT02::BARKER
Created:Thu Jul 28 1988
Last Modified:Mon Jun 02 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:550
Total number of notes:3847

274.0. "QUAD 33/303 amplifier/preamplifier anyone know anything?" by LARVAE::BARKER (Do not fold, spindle or mutilate) Tue May 07 1991 17:18

	Does anyone know the value and quality of a QUAD valve power amplifier 
& pre-amplifier combination that a friend of mine has been offered? I believe 
that the numbers are 33 and 303 although which is the power amp & which is the 
pre-amp I'm not sure.

Nigel
T.RTitleUserPersonal
Name
DateLines
274.1CHEST::WATSONAs simple as possible, not simplerWed May 08 1991 09:199
    The 33 / 303 [Pre/Power] is transister not valve. The last Quad valve
    amps were the 22 / II. The II was a mono valve power amp so you needed
    two.
    
    As for value the 22 / II have a collectors value so could be quite
    expensive but the latter 33 / 303 are probabably quite a lot cheaper
    though I couldn't put an exact price on them.
    
    	Rik
274.2#150HAMPS::IVES_JI've got a bad feeling, Mr Tracey!Wed May 08 1991 14:233
    I saw an add recently in Gramaphone #150 sterling for a 33/303
    combination. I would personally go for the 22/2X2 valve Combination,
    usually retailing for around the same amount.
274.3The good olds days...when hifi was simpleUFHIS::JMASLENThe wheels fallen off your day yet?!Wed May 08 1991 15:4933
    I've got these old workhorses gathering dust somewhere in New Zealand!
    They cost around NZ$1000 for a good pair, in UK I see them for around
    150 pounds (NZ$450), in Germany, anything from Quad is overpriced (eg.
    Quad 22/II's for 1600DM's as opposed to 250 pounds UK [750DMs]in UK for
    a mint set).
    
    The 33 preamp is not really a dynamic amp (I tried updating the
    transistors and fiddled with splitting the power supply....added a
    second power supply...one per channel......no big deal/improvement,
    just a little only.
    
    The 303's on the other hand are nicer, especially when you buy another
    one and turn them into two 100watt monoblocs,. The amps are most stable
    when driving low impedance speakers like Magnaplanars, electrostats
    etc. A poor man's substitute for the arcwelding power amps from the USA
    that one generally spends 1000's on to drive difficult loads. At least
    you don't kill anything with them. If anybody suggests the 100watt Quad
    402 to you, be careful as the Mark 1 version wasn't so stable.....it
    was also monoblocable to 200 watts! Definitely an improvement this
    monoblocing caper.........sadly the newer Quads can't be (306, 606
    etc).
    
    Does all this remanicing from an earlier love.......I hope it helps
    you, remember, second hand quality is still quality. Wait long enough
    and they will also go up in price! 
    
    cheers fjeff
    
    PS: check the selection switches and the filter switch on the 33
    preamp, sometimes they get a bit noisy after a few years of heavy use,
    also leave the 33/303 permanently turned on night and day.....warmer
    sound.
    
274.4Need info QUAD 520i & QUAD 606ZPOVC::PARRYCHUASingapore, Life is bid-$-fineSun Sep 15 1991 04:117
    Hi,
    
    Anyone out there know about the QUAD 520i and the QUAD 606 power
    amplifier ? Technology used and it review ant raing ..
    
    Thanks
    Parry