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WHAT HI FI Sound and Vision 2004
Winner of Best Stereo Amplifier £1400-£3000. November 2004
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Hi Fi Choice: Editor’s Choice
and Product of the Year for 2004
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What Hi Fi: 2 X Five Star reviews and
beat all comers
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Hi Fi News: Chris Breunig bought one!
Summary
We have called the new amplifier the Laboratory Series
because it is a development of the amplifiers we use to evaluate our
loudspeakers. It is particularly important that an amplifier being used for
such a purpose is immune to the effects of the speaker, has negligible
distortion and sufficient dynamic range to avoid clipping on the transients in
music. We want to hear the music not an inadequate amplifier!
There are six inputs with the option of a phono stage (more on that later), the
tape loop is buffered and it is possible to record one source while listening
to another. Volume control is by a large bead blasted aluminium knob (to
provide the correct feel) and the front panel has accurate graduations to
ensure its precise location. When controlled by the remote handset, a dab of
the button will produce changes of a 1/2 dB!
Power output into 8 ohms is a conservatively rated 200 WPC and
this almost doubles into 4 and 2 ohms. Enormous current is available ensuring
that the largest and most complex speakers are driven with ease and that low
frequency control and dynamics are displayed to perfection. If the amp is
shorted, protection is swift as it is if the load drops to a little over 1 ohm.
The most sensitive ear applied to the most sensitive loudspeaker may just be
able to hear background noise. Distortion is lost in the noise generated by
most test equipment!
This is one of the finest sounding amplifiers you are going to hear, regardless
of your budget!
AVI is for serious music enthusiasts and for many this means they must still be
able to play irreplaceable vinyl and play it to the highest standard that
technology permits. We have designed a factory fittable phono stage that is
switchable (via a switch in the rear panel) to either moving coil or moving
magnet cartridges. For those with the finest, we can alter the input to
precisely match it. There is a modest additional charge for this service.
Specifications
| Frequency
Response (-3dB) |
<1.5Hz -
>250Khz |
| Input Impedance |
14k Ohms |
| Input
sensitivity (150W into 8 Ohms, 1kHz) |
530mV |
| Tape Output
Level (at rated sensitivity) |
530mV |
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| Maximum Power
Output (One channel driven):
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| 8 Ohms, 1kHz, 1%
distortion |
200W |
| 4 Ohms, 1kHz, 1%
distortion |
325W |
| 2 Ohms, 1kHz, 1%
distortion (note 1) |
480W |
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| Maximum Power
Output (Both channels driven):
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| 8 Ohms, 1kHz, 1%
distortion |
175W |
| 4 Ohms, 1kHz, 1%
distortion |
300W |
| 2 Ohms, 1kHz, 1%
distortion (note 1) |
420W |
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| S+N/N Ratio
Unweighted |
96dB |
| S+N/N Ratio IEC
A |
112dB |
| Absolute Phase |
+VE |
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| Distortion
(T.H.D., 1kHz, -1dB below full power):
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| 8 Ohms |
<0.002% |
| 4 Ohms |
<0.002% |
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| AC Mains supply
(factory pre-set) |
110v-120v,
220v-240v |
| AC Mains
consumption |
1000W max. |
| Dimensions (W X
D x H) |
315 x 350 x 95mm |
| Shipping
dimensions (W X D X H) |
400 x 440 x
170mm |
| Gross weight |
12.8Kg |
RRP
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$4406 |
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