All
Power amplifiers stereo — CH Precision A1.5
Description, images, technical data and specifications
CH Precision A1.5
Image source — © CH Precision
The A1.5 is a versatile stereo power amplifier from CH Precision, a well-established Swiss manufacturer known for uncompromising, modular high-end electronics engineering, built with flexible bi-amp and bridged operating modes. The A1.5 brings CH Precision's most storied engineering heritage to dedicated stereo power amplification.
Key specs that matter
Input impedance is 94,000 ohms balanced or 47,000/300 ohms single-ended (selectable). Output power is a substantial 2 x 150W into 8 ohms, rising to 2 x 275W into 4 ohms. Signal-to-noise ratio exceeds 115dB in stereo and bi-amp modes, or 118dB in bridged mode. Total harmonic distortion plus noise is under 0.1% at 0% global feedback or under an exceptionally low 0.01% at 100% global feedback. Maximum power consumption is a substantial 1,800W. At 440 x 440 x 198mm and 47kg, the A1.5 represents a serious power amplifier commitment reflecting CH Precision's uncompromising Swiss engineering standards.
Sound and use context
Expect exceptionally clean amplification reflecting the exceptional over-118dB bridged-mode signal-to-noise figure, with the flexible bi-amp and bridged operating modes adapting to different system configurations.
Pairing
The flexible bi-amp and bridged operating modes let the A1.5 be reconfigured for stereo, bi-amplified, or mono-bridged operation to suit different system needs.
Alternatives
CH Precision's own M1.1 offers a considerably more powerful alternative within the same broader power amplifier catalogue.
Key specs that matter
Input impedance is 94,000 ohms balanced or 47,000/300 ohms single-ended (selectable). Output power is a substantial 2 x 150W into 8 ohms, rising to 2 x 275W into 4 ohms. Signal-to-noise ratio exceeds 115dB in stereo and bi-amp modes, or 118dB in bridged mode. Total harmonic distortion plus noise is under 0.1% at 0% global feedback or under an exceptionally low 0.01% at 100% global feedback. Maximum power consumption is a substantial 1,800W. At 440 x 440 x 198mm and 47kg, the A1.5 represents a serious power amplifier commitment reflecting CH Precision's uncompromising Swiss engineering standards.
Sound and use context
Expect exceptionally clean amplification reflecting the exceptional over-118dB bridged-mode signal-to-noise figure, with the flexible bi-amp and bridged operating modes adapting to different system configurations.
Pairing
The flexible bi-amp and bridged operating modes let the A1.5 be reconfigured for stereo, bi-amplified, or mono-bridged operation to suit different system needs.
Alternatives
CH Precision's own M1.1 offers a considerably more powerful alternative within the same broader power amplifier catalogue.
Specifications
Model name
A1.5
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
94 000
Input impedance (single-ended) (Ω)
47 000 or 300
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Max current (A)
N/A
Output power (8Ω) (W)
2 x 150
Output power (4Ω) (W)
2 x 275
Gain (dBu)
N/A
Frequency response low +/- 3dB (Hz)
N/A
Frequency response high +/- 3dB (Hz)
N/A
Signal to Noise Ratio (dB)
> 115dB in stereo and bi-amp modes, > 118dB in bridged mode
Total Harmonic Distortion + Noise (0% global feedback) (%)
< 0.1
Total Harmonic Distortion + Noise (100% global feedback) (%)
< 0.01
Max power consumption (W)
1800
Damping factor
N/A
Dimensions (mm)
440 x 440 x 198
Weight (kg)
47
Official link
More components
Power amplifiers stereo
CH Precision M1.1
Power amplifiers stereo
CH Precision M10 Stereo