Classe Sigma Amp2 2 CHANNEL AMP
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Condition | |
Payment methods | |
Ships from | Rochelle Park, NJ, 07662 |
Ships to | United States |
Package dimensions | 21.0" × 19.0" × 9.0" (30.0 lbs.) |
Shipping carrier | FedEx |
Shipping cost | Log in to see price |
Original accessories | Box, Manual |
Average | Research Pricing |
Sigma AMP2 TWO-CHANNEL AMPLIFIER
JUST A HEADS UP WE WILL BE OUT OF THE OFFICE FROM 7/26/19-8/12/19
AND WILL NOT BE ABLE TO SHIP THIS LISTING IF IT SELLS DURING THAT TIME FRAME.
WE WILL SHIP IT WHEN WE RETURN ON 8/12/19.
The Sigma
series AMP2 is a 200W/Ch stereo amplifier utilizing switching technologies for
both power supply and amplification stages. A Classé-designed switch mode power
supply with Power Factor Correction makes over 1,000W of clean and stable power
available while being both compact and efficient. A new class D amplifier
topology provides wide dynamic range, smooth and extended frequency response
and rich harmonic detail to yield stunning sonic performance. The efficiency of
class D adds efficiency, low heat dissipation and relatively small size to the
list of the AMP2’s attributes.
Sigma series
amplifiers are designed to pack tremendous power, performance and value into
relatively small and energy efficient chassis. The Sigma series AMP2 is derived
directly from the acclaimed Delta series CA-D200, sharing both power supply and
amplifier circuitry. In the same way that our CT series models use the same
circuitry as the equivalent
the AMP2 is
actually the 200W/Ch CA-D200 in a Sigma series chassis. The AMP5 also shares
these same power supply and amplifier topologies, but with the necessary
changes implemented to accommodate its five-channel configuration.
The basis of the design is
switching technologies, used
in both the power supply and audio stages. A Classé- designed Switch Mode
Power Supply (SMPS) and Power Factor Correction (PFC) circuit, each operating
at over 90% efficiency, provides a crystal clear reservoir of over 1kW of
power. The low frequency dynamics, extension and control of these amplifiers
and their ability to effort- lessly drive difficult speaker loads can be
credited in large part to the powerful and sophisticated power supply they
employ. This combination of SMPS with PFC allows the Sigma series amplifiers to
draw current from the wall throughout the voltage cycle, avoiding the sharp
spikes
of current drawn by
conventional power supplies. Such sharp and short current demands cause
high-frequency harmonics on the AC mains. By creating no such distur- bance,
the Sigma series amplifiers deliver their prodigious power while remaining
effectively silent as far as the AC shared with preamp/processor and source
components
AMP2 and AMP5 audio circuits
use a true digital archi- tecture, taking advantage of DSP to solve an issue
called dead-band-time, the greatest source of distortion in oth- erwise
well-designed class D amplifiers. Dead-band-time, somewhat analogous to
switching distortion in a class A/B amplifier, is the time when the plus and
minus halves
of the amplifier are both off; it should be as close to
zero as possible and i design it is less series amplifiers use only a small
level of overall negative feedback, helping to achieve low intermodulation
distor- tion. Proprietary driver stage FETs ensure quick
and precise switching of the
output stage, contributing to the amplifiers’ vanishingly low dead-band-time
and maximizing their efficiency. The critical output stage filters are then
used to filter only the 384 kHz switching frequency, leaving the amplifier with
a neutral, extended and open upper midrange and high-frequency performance.
The Sigma AMP2 and AMP5 owe
their outstanding performance and value to the unique engineering and
manufacturing capabilities of Classé in Montréal and the B&W Group globally.
No other high-end audio designers have access to the resources necessary to
deliver such amplifiers at such competitive prices. The AMP2 and AMP5 have been
conceived and built as examples of quality and value without peer. They will
stand as bench- marks in the advancement of class D amplifier technology.
All tests
un-weighted and 20Hz – 20kHz measurement bandwidth used.
Frequency response
10Hz – 20kHz, -1dB
into 4Ω
Output power
200W rms into 8Ω
400W rms into 4Ω
Harmonic Distortion
<0.018% @ 1kHz
Balanced Input
Peak Output Voltage
116V peak to peak,
41V RMS no load
116V peak to peak, 41V RMS into 8Ω
Input Impedance
100kΩ Balanced /
50kΩ SE
Voltage gain
29 dB
Input level at
clipping
1.4Vrms Balanced/SE
Intermodulation
Distortion
>80 dB below
fundamental into 8Ω Balanced
Signal to Noise
Ratio
-100 dB at peak
output into 8Ω (AES17)
Rated power
consumption
177W @ 1/8th power
into 4Ω
Mains voltage
100V - 240V, 50/60Hz
Overall Dimensions
Width: 17.00"
(433mm)
Depth (excluding connectors): 14.57" (370mm)
Height: 3.75" (95mm)
Net weight
22.0 lb (9.97 kg)
Shipping weight
28.0 lb (12.70 kg)
WE ALSO HAVE THE SIGMA SSP PRE-AMP FOR SALE UNDER A
SEPERATE LISTING
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