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AmplifiersIntegrated AmplifiersHeadphone AmplifiersDiscontinued
Estimated price (community-sourced)
$550
Around — community and catalog average, updates slowly
About the HD-AMP1
The HD-AMP1 is a compact stereo integrated amplifier with a built-in USB DAC and digital and analog inputs. Its amplifier delivers 35 W per channel into 8 ohms and 70 W per channel into 4 ohms. Digital features include an ESS SABRE ES9010K2M DAC, asynchronous USB-B audio input supporting PCM up to 384 kHz/32-bit and DSD up to 11.2 MHz, two optical inputs, and one coaxial input. It also has two analog inputs, a front USB-A port, a headphone output with selectable gain, and a subwoofer output. Marantz lists the model in its product archive; it was discontinued in 2022.
Specifications
Type: Stereo integrated amplifier with DAC
Rated output: 35 W + 35 W (8 Ω, 20 Hz–20 kHz, 0.1% THD)
Dynamic power: 70 W + 70 W (4 Ω, 20 Hz–20 kHz, 0.1% THD)
DAC: ESS SABRE ES9010K2M
USB-B audio: PCM up to 384 kHz/32-bit; DSD 2.8, 5.6, and 11.2 MHz
Digital inputs: 2 optical, 1 coaxial
Analog inputs: 2
USB inputs: Rear USB-B, front USB-A
Frequency response: 2 Hz–50 kHz (DSD/192 kHz PCM, −3 dB); 2 Hz–20 kHz (44.1 kHz PCM)
Signal-to-noise ratio: 105 dB
Total harmonic distortion: 0.05%
Headphone output: Yes, with low/mid/high gain settings
Subwoofer output: Yes
Power consumption: 55 W; standby 0.3 W
Dimensions (W × H × D): 304 × 107 × 352 mm
Weight: 5.8 kg