CH Precision A1 - Amplificateur de Puissance à 2 canaux (2 x 100W RMS 8Ω)

Démo état de neuf avec 24 mois de garantie! 
L'Amplificateur de Puissance CH Precision A1 est un instrument de musique extraordinaire. Il est configurable et adaptable à l'infini. En mode MONO bridged il est capable de fournir 350 Watts en continu sous 8 Ohms! Tous les fabuleux instruments de musique CH Precision sont développés et fabriqués en +Suisse+.

En stock - Port offert
23'900.00 CHF (prix neuf: 30'100.00 CHF)
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As the driving force behind recreating the full musical experience, the task of the power amplifier may seem desperately simple but is indeed highly complex. Achieving our simple goal of ”add nothing, remove nothing” to preserve the full musical emotion has resulted in a ground breaking new amplifier topology. Housed in a chassis similar to the C1 and D1, the A1 sets new standards in terms of performance, flexibility of adjustments, industrial design and pure enjoyment.

The A1 is based on a novel proprietary amplifier architecture which optimizes the critical matching of the amplifier with the speaker. It can be operated either as a stereo amplifier (2x 100WRMS under 8Ω), as a monaural bi-amping amplifier (2x 100WRMS under 8Ω) or as a bridged amplifier (1x 350WRMS under 8Ω).

A sophisticated mechanical chassis design and full USB based firmware update support contribute to make the A1 a real long term enjoyment.

Option board:
Analog_Buf: Monaural analog input buffer board à CHF 1'700.-
Three analog inputs - XLR, RCA and BNC - are provided on a single board. A pass-through XLR male connector allows a direct connection to another A1 amplifier.
Can be factory ordered for Left or Right channel.
Factory built-in (1x), second board is needed for stereo operation

Caractéristiques techniques:
Analog inputs:
Inputs type Balanced (XLR), one connector per board
Single-Ended (RCA & BNC), one connector per board
Input impedance Balanced: 94kΩ
Single-Ended: 47kΩ or 300Ω
Input stage JFET input stage
Ultra-low noise, discrete fully differential stage
24dB range adjustable gain in 0.5dB steps

Amplification:
Amplification stage Ultra-low noise full discrete class AB design
5 pairs of complementary output transistors
Bias Patent-pending bias circuitry for constant bias operation
Feedback User-adjustable local vs. global feedback ratio, from 0% to 100% with 20% steps
Bandwidth DC to 450kHz (-3dB) at 1W into an 8Ω resistive load
Signal to Noise Ratio Better than 115dB in stereo and bi-amp modes
Better than 118dB in bridge mode
Total Harmonic Distortion + Noise Less than 0.1% with 0% global feedback
Less than 0.01% with 100% global feedback

Analog outputs:
Binding posts Two pairs of Argento binding posts for loudspeakers connection
Monitoring Non-intrusive DSP-based protection of the amplifier
Instantaneous voltage & current values are permanently monitored for each channel
Protections Short-circuit protected
Disconnected loudspeaker detected
Over-temperature of the heatsink, fans are activated if needed
Over-temperature of the output transistors
Power supply:
Transformer 1'200VA single transformer, oversized for low-noise operation
Power capacitors  2x 47'000uF/63V 4-poles capacitors
Regulators Non-regulated symetrical power supply for the power stages
Eight local regulation stages for input/driver stages
Seven local regulation stages for the logic/display

General:
Display 480x272 pixels, 24bits color, AMOLED
Mains operation Selectable 100V, 115, 230V AC, 47-63Hz
Power supply consumption <1W (standby), 1200W max in operation
Dimensions/Weight 440 x 440 x 120mm (W x D x H), 43kg
Remote control Ethernet interface, TCP/IP control

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