Grace Design m920

• Grace Design

Analog In

• Headphone output, volume at maximum: 0 dB
• Balanced line output, volume at maximum: -0.5 dB
• Unbalanced line output, volume at maximum: -8 dB

Frequency Response

• At 0 dBu out +/- 0.25 dB: 15 Hz – 50 kHz
• At 0 dBu out +/- 0.5 dB: 9.5 Hz – 72 kHz
• At 0 dBu out +/- 0.3 dB: 4 Hz – 192 kHz

Maximum Input & Output Level

• Balanced input: 22 dBu
• Unbalanced input: 16 dBu
• Unbalanced output (at 1 kHz, 100 kohm load): 22 dBu
• Balanced output (at 1 kHz, 100 kohm load): 23 dBu
• Headphone output (at 1 kHz, 50 ohm load): 20 dBu

Impedance

• Balanced input: 106 kohm
• Unbalanced input: 53 kohm
• Balanced output: 95 ohm
• Unbalanced output: 47.5 ohm
• Headphone output: 1.2 ohm

Dynamic Range

• At 0 dB gain, balanced in > balanced out: 116 dB
• At 0 dB gain, balanced in > headphone out: 117 dB

THD + N

• Headphone out (at 10 dBu, 50 ohm load, SMPTE 4:1): < 0.008%
• Headphone out (at 10 dBu, 50 ohm load): < 0.005%
• Unbalanced line out (at 10 dBu, 100 kohm load): < 0.00045%
• Balanced line out (at 20 dBu, 100 kohm load): < 0.00075%

Attenuator

• Channel matching: < 0.05 dB
• Attenuator range: 97.5 dB

Output Noise Floor

• Balanced output, volume at maximum, 22 – 22 kHz: -93 dBu
• Balanced output, volume at minimum, 22 – 22 kHz: -99 dBu
• Unbalanced output, volume at maximum, 22 – 22 kHz: -103 dBu
• Unbalanced output, volume at maximum, 22 – 22 kHz: -105 dBu

DAC

• Input formats: AES, S/PDIF, TOSLINK (PCM in kHz: 44.1, 48, 88.2, 96, 176.4, 192, DSD64)
• Input formats: USB (PCM in kHz: 44.1, 48, 88.2, 96, 176.4, 192, 352.4, 384 DSD64, DSD128)
• Input sample rate: 32, 44.1, 48, 88.2, 96, 176.4, 192 kHz

Output Level

• Unbalanced output at 0 dBFS, volume at maximum, trim at 0: 9 dBu
• Balanced output at 0 dBFS, volume at maximum, trim at 0: 7.6 dBu
• Unbalanced output at 0 dBFS, fixed DAC output mode: 8.2 dBu

Physical

• Power supply: 120 V AC, 0.16A or 230 V AC, 0.08A
• Dimensions: 1.7 x 8.5 x 8.25 in (4.3 x 21.5 x 21 cm)
• Weight: 5 lb (2.2 kg)