Headphone Amplifier / Preamplifier / DAC The Atoll HD120 headphone amplifier distinguishes itself with its unique converter stage, designed for optimal enjoyment of digital sources. Atoll has meticulously engineered the HD120 to complement the finest headphones, ensuring exceptional versatility and impeccable musicality. Additionally, it features a preamp output that seamlessly integrates with the MA100 or any other ATOLL power amplifier. Versatile Atoll Remote The optional Atoll remote control for the Atoll HD120. This versatile remote allows for easy input selection and volume, and can be used to control all Atoll products, including integrated amplifiers, preamps, tuners, DACs, and CD players. Features 4 mm brushed aluminium front. 3 independent linear transformers (including 2 very low noise reserved for analogue audio in dual mono configuration). 8 regulated power supplies (including 4 specifics for the audio stages). Analogue volume control (ALPS potentiometer). Class A biased discrete component audio preamp stages. Final stage with bipolar transistors. High-end CLARITY CAP MKP Link Capacitors. BURR-BROWN PCM5102 converter: – Dynamic: 112 dB. – Signal/Noise ratio: 112 dB. Optional remote control (volume management and selection). Specifications Connectivity: Line Inputs: 2 Line inputs (RCA). Digital Inputs: 1 Coaxial input (24 bits/192 kHz). 1 Optical input (24 bits/192 kHz). 1 USB-B input (24 bits/192 kHz). Preamplifier Output: 1 Preamplifier output (RCA). Trigger Output: 1 Trigger output 12V (direct ON/OFF connection with the MA100). Bluetooth® Input: 1 Bluetooth® input (direct i2S link). Specifications: Power Supply: 12.4 VA Rated Power: 1.4 W/32Ω Pulse Power: 6.8 W/32Ω Total of Capacitors: 12,425 µF Number of Inputs: 2 analogues, 3 digital, 1 Bluetooth® (HD120) Input Impedance: 220 kΩ Headphone Output Impedance (X2): 1Ω Bandwidth: 1 Hz – 150 kHz Rising Time: 1.5 µs Signal/Noise Ratio: 100 dB Distortion Rate at 1 kHz: < 0.01% Dimensions (mm): 320×225×63 Weight: 3 kg
