Pre/Power Amplifiers

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Ken Kessler  |  Mar 23, 2021  |  First Published: Jan 01, 1997
hfnvintageClassic tubes meet modern tech in the £30,000 Project T-1 monoblocks. Is this Marantz's ultimate amplifier, asks an awestruck Ken Kessler

Contemplating the Project T-1 power amplifiers from Marantz, I realise that nothing in hi-fi should surprise us any more. If, in 1990, someone had told you that, by 1997, the hi-fi community would be clamouring for single-ended triodes and horn systems, that Quad and McIntosh and Marantz would reissue their valve classics, that Mobile Fidelity would open a new LP pressing plant and that Krell and Audio Research would introduce integrated amps, you'd have had that someone committed.

Martin Colloms  |  Jul 30, 2019  |  First Published: Mar 01, 1990
Martin Colloms hears the ultimate amplifier system from one of audio's elite names: the No26/No20.5 pre/power duo and No25 phono stage

Since acquiring the Mark Levinson Audio Systems company five years ago, Madrigal Labs has pursued an evolving research programme, generating improved circuits and product designs. The result is that current MLAS products now have an importance comparable with the original brand's landmark designs.

Ken Kessler  |  Apr 26, 2019  |  First Published: Aug 01, 1989
Few specialist Japanese valve amps ever leave Honshu, so as the Air Tight ATC-1 and ATM-1 finally hit British shores, Ken Kessler is on standby...

For the past four years, I've been waiting impatiently for a stab at the electronics from Air Tight. I admit that the charm of the name, the absolute perfection of that moniker for a brand of valve amplifiers, caught my attention as much as did the obviously exquisite manufacture. The price, too, appealed, considering that these amplifiers promised peerless construction and attention to detail you just don't find this side west of a Jadis. At last there's a UK importer, so my wait is over.

Ken Kessler  |  Apr 24, 2020  |  First Published: Apr 24, 1986
hfnvintageKen Kessler takes delivery of the Audio Research SP-11 preamplifier

The time is early June, and let us imagine that this issue has been on the stands for two weeks. Editorial secretary Jennifer Scotland walks to where I am sitting and dumps a pile of letters on my desk. The angry correspondence has arrived.

John Atkinson  |  Aug 19, 2020  |  First Published: Jan 01, 1986
hfnvintageJohn Atkinson lives with Krell pre- and power amplification

Streetwise. Now there's a word. I suppose you could say that in a hi-fi context it means being aware of the unwritten myths, such as 'image depth is due to microphony in valve amplifiers' or 'Class A amplifiers sound better than ones operating in Class B' or 'the only truly great preamplifiers use valves'.

Martin Colloms  |  Dec 30, 2019  |  First Published: Oct 01, 1983
Martin Colloms takes a listen to four new designs costing £250 plus

Following last month's batch of integrated amplifiers costing under the £200 mark, more advanced models have been chosen for this project. The new Mission 778 (Mission Cambridge) represents the UK contribution (£240). The Harman Kardon PM650 combines Japanese and American design (£250), while the European contender is the Revox B251 (£900 plus £45 for the remote controller). All three models are integrated amps with MC and MM input facilities. I also look at another new UK model, the powerhouse P128 from Sugden, which is a dual 'monoblock' power amp (£395).

Martin Colloms  |  Oct 26, 2021  |  First Published: Dec 01, 1982
hfnvintageMartin Colloms hears the A&R Cambridge C200/SA200 pre/power duo

These new products from A&R Cambridge have been long in the pipeline. In an unusually brave step for such a small company, it has invested in moulding tooling for the front panels and also the casework of the preamplifier. Its aim was to achieve close tolerances, and considerable effort has been expended in achieving a good fit of parts, particularly for the array of controls on the preamplifier.

Martin Colloms  |  Oct 16, 2020  |  First Published: Jan 01, 1982
hfnvintageTiny amp, lashings of power... Martin Colloms lifts the lid on a box of tricks

The long awaited Carver Cube power amplifier is at last available in the UK. Bob Carver, its designer, is not a particularly well known figure in the UK but most people have heard of Phase Linear, which was founded by him, and he also designed its range of products. His special interest has been in high-power amplifiers, with the 400 B and 700 B Phase Linear models now audio legends.

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