Phasemation CM-1500 — Preamplifier with “Hybrid Passive Attenuator”
14.02.2025 05:28 | ~1 minute read
Japanese company Phasemation has released the hybrid preamplifier Phasemation CM-1500. The device is equipped with a patented “Hybrid Passive Attenuator” volume control and offers high input impedance and low output impedance – which guarantees perfect matching with other components of the signal path.
Phasemation CM-1500 is equipped only with resistive and transformer type attenuators, which ensures the purity and expressiveness of the sound. The transformer uses the proprietary ultra-thin 0.1mm super malloy material – it is also used in the company's top devices. The author's circuit technology is used, in which a balanced attenuator transformer with two attenuator windings for the hot and cold sides of the balanced connection coiled onto a single transformer – this approach increases detail. And three-step gain switching (-10, 0, +6 dB) makes any volume setting to be possible.
Speaking of commutation capabilities, the Phasemation CM-1500 has three RCA inputs and two XLR' outputs are single-ended and balanced. The case is made of copper-plated steel sheet, and the front panel is made of aluminum. The new preamp is priced at 7,500 euros.
Specifications
This product is in the Hi-Fi and High End Electronics and Acoustics database
Preamplifiers — Phasemation CM-1500
Model name
CM-1500
Analog inputs (balanced)
2
Analog inputs (single-ended)
3
Analog outputs (balanced)
2
Analog outputs (single-ended)
2
Gain (dBu)
6
Input sensitivity (mV)
N/A
Output voltage (V)
N/A
Input impedance (balanced) (Ω)
47000
Input impedance (single-ended) (Ω)
47000
Output impedance (balanced) (Ω)
250
Output impedance (single-ended) (Ω)
250
Maximum output level (balanced) (dBu)
N/A
Maximum output level (single-ended) (dBu)
N/A
Volume control range (dBu)
N/A
Frequency response low +/- 3dB (Hz)
10
Frequency response high +/- 3dB (Hz)
100000
Signal to Noise Ratio (SNR, unweighted) (dB)
N/A
Total Harmonic Distortion + Noise (THD+N) (%)
N/A
Dimensions (mm)
430 × 93 × 362
Weight (kg)
8
Official link
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