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Meridian 557

Stereo Power Amplifier (1996-01)

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Meridian 557


Power output: 200 watts per channel into 8Ω (stereo), 650W into 8Ω (mono)

Total harmonic distortion: 0.05%

Input sensitivity: 1.4V

Signal to noise ratio: 90dB

Dimensions: 176 x 400 x 320mm

Weight: 27kg

Finish: black textured enamel and glass


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Reviewed Mar 21st, 2012 by guest

Have had this beauty in my system with Audiolab 8000Q pre for about three weeks and compared to previous Audiolab 8000P this amp is a revelation. Bass is tighter, sound is smooth and effortless. ATC SCM7's have come alive ! Quietest power amp (at the speakers) l have ever owned - you hear NOTHING ! Does, however, have minor transformer buzz which l am willing to live with given what audio bliss is issuing from the ATC's. Internet opinion that this gem is underrated is accurate, although, What Hi Fi 1999 did give it 5 stars - smooth, powerful with delicacy was the verdict. l could not agree more.



re: 557

I agree with the above review. The 557 is very quiet indeed, packs a great punch and adds some transformer hum, emitted from the amp itself. In my amp it is not constant though and is louder when the amp has just been switched on. I leave it on forever and find that it sounds better after a few days if it was switched off (e.g. during holidays).

Be sure to short the RCA inputs when you use the balanced inputs or some hum will be audible through the speakers.

I used the amp to power all kinds of speakers, from Martin Logan and Audiostatic electrostats to Tannoy boxes. It keeps its stability under all circumstances. A great amplifier.

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