Being sold as spares or repair, the power transformer has detached from the board and it is not easily resolderable, so will likely require a replacement transformer to repair. See photos.

The Drawmer MX30 is a two-channel line-level rack compressor with limiter and gate, designed for musicians, project studios, and live engineers. It is a professional quality dynamics processor with automated features enabling fast, effective dynamic control.

Key Features:

• Dual gated compressor limiter with separate gate, compressor, and peak limiter for each channel
• Variable threshold for adjusting sensitivity, and two fixed release speeds for processing fast or sustained sounds
• Auto compressor with variable threshold and ratio, soft knee, and automatic attack and release
• Output section with make-up gain to apply to compressed audio
• Peak limiter section to prevent distortion
• Master link switch for stereo or dual mono modes
• Fuse rating: T32mA for 230V, T63mA for 115V, conforming to IEC 127-2

Specifications:

• Input Impedance: 20k Ohms, 4k Ohms
• Maximum Input Level: +21dBu
• Output Impedance: 50 Ohms, 100 Ohms
• Maximum Output Level: +20dBu
• Frequency Response: <10Hz to 36KHz @-1dB
• Signal-to-Noise Ratio: <100dB @ 1kHz, <0.02% @ 1kHz 0dB
• Power Consumption: 9VA @ 230Volt or 115V at 50-60Hz