Grace Design m902 Reference D/A headphone amplifier Specifications

Sidebar 1: Specifications

Description: Headphone amplifier with digital and analog inputs. Input sample rates: 32–192kHz. Maximum voltage gain: 0dB (Normal), 10dB (Boost). Frequency response at 0dBu output: 4Hz–600kHz, ±3dB. Maximum output level: 21.4dBu (9.11V RMS). Input impedance: 106k ohms balanced, 53k ohms, unbalanced. Output impedance: 1 ohm. THD+N: <0.08% at 10dBu into 50 ohms, headphone output; <0.002%, at 10dBu into 50 ohms, line output. IMD (SMPTE 4:1): <0.08% at 10dBu into 50 ohms.
Dimensions: 8.5" W by 8.25" D by 1.75" H. Weight: 5 lbs (2.2kg).
Serial number of review sample: 92049.
Price: $1695.
Manufacturer: Grace Design, 2434 30th Street, Boulder, CO 80301. Tel: (303) 443-7454. Fax: (303) 444-4634. Web:

Grace Design
2434 30th Street
Boulder, CO 80301
(303) 443-7454