WORKING CONDITION: Excellent. This M-1 offers 60dB quiet gain via the High Gain button, which, along with +48VDC Phantom Power and Polarity Reversal, is accessible on its front panel. This is a fantastic preamp for acoustic instruments, vocals, and orchestral recording. It sounds clean and excellent with no coloration. 

PHYSICAL CONDITION: Excellent. There are a few signs of rack rash from being installed, but the front panel is clean, and the metal chassis is in excellent condition. 

INVENTORY #59337

BRAND: John Hardy Company

MODEL: M-1

FUNCTION: Microphone Preamplifier

PRODUCT DESCRIPTION: This listing is for a John Hardy M-1 Rackmount 2 Channel Microphone Preamplifier. The John Hardy M-1 is widely considered one of the world's finest solid-state microphone preamplifiers. Originally introduced in 1987, it has maintained a legendary reputation among audio professionals for its exceptional transparency, low-noise performance, and robust "solid" sound profile.

SPECS:

• Serial #  N/A
• The M-1 achieves its world-class sonic performance through three distinct design choices: 
  • Jensen JT-16-B Input Transformer: Recognized as a premium input transformer, it provides an initial natural, ultra-low-distortion voltage step-up.
  • 990 Discrete Operational Amplifier: The core gain engine utilizes the highly-regarded 990 discrete op-amp (updated to the 990C+ surface-mount design), which is significantly faster, quieter, and cleaner than standard monolithic microchip op-amps.
  • No Coupling Capacitors: By completely eliminating all capacitors from the signal path, the circuit avoids the phase shift, signal degradation, and "audio smearing" typically caused by dielectric absorption
• Continuous Gain Control: Features a dual-section rotary gain potentiometer for continuous adjustments, supplemented by a front-panel "High Gain" switch to handle lower-output microphones.
• Essential Front Panel Tools: Includes LED-illuminated switches for +48V Phantom Power, Polarity Reverse, and an individual channel Ground Lift to eradicate studio hum.
• Modular Mainframe: Built into a 19-inch 1U rack-mount chassis that can hold between 1 to 4 individual preamp channels, allowing engineers to expand the unit as their budget permits.

ACCESSORIES INCLUDED: This item comes as seen in photos and includes its original owner's manual. 

UNPACKAGED WEIGHT: 11 lbs.

UNPACKAGED DIMENSIONS: 19" x 2" x 10"