Audioengine D1 - 24 Bit DAC/Headphone Amplifier Step into the next generation of sound experience with the Audioengine D1 - 24 Bit DAC/Headphone Amplifier, your perfect, all-in-one companion for superior audio engagement. Whether you're a serious audiophile or an everyday music lover, the D1 caters to your highest demands, giving you the ultimate power to dramatically enhance your listening experience no matter the playback device. From computers, phones, tablets, and TVs, the D1 acts as an elite middle man, upgrading and refining every frequency and note to unparalleled accuracy. The heart of this sound titan is the revered AK4396 DAC converter, celebrated in audio circles for its low noise and impressive fidelity. Meanwhile, the unit's headphone amplifier, based on the noise-cancelling TI OPA2134 opamp, invites you to witness a new level of headphone performance, turning even the most discerning audiophile into a believer. Beyond its audio prowess, the D1's power source is cleverly engineered for stability. Powered directly from the USB bus and passed through stringent, dual-stage regulation, you can rest assured that unsightly variations in USB power will never compromise your aural delight. What's more, the handy volume control on the front panel serves your ease, becoming your sonic maestro with just a simple twist. Elevate your auditory experience with the D1, and turn ordinary audio into a high-definition concert! Features: Superior DAC and Headphone Amplifier: With its premium 24-bit DAC using the acclaimed AK4396 DAC converter for exceptional low noise and high fidelity sound, and a high-performance headphone amplifier based on the TI OPA2134 low noise opamp, the D1 delivers audio reproduction of the highest quality. Wide Variety of Inputs: Versatility is at the heart of D1. It can connect with your computer, phone, tablet, TV, and more through USB and SPDIF Optical inputs. Asynchronous Dual Clock and USB Transfer Mode: These features ensure superior performance when it comes to data transfer and playback. Multiple Outputs: It has analogue RCA L/R stereo and a 3.5mm mini-jack stereo output, making it easy for you to connect any audio device. High Performance Specification: With a frequency response of 10Hz-25Khz (+/- 0.5dB), and a signal-to-noise ratio (SNR) over 110dB, the D1 procures an extraordinary low noise and low distortion sound experience. Redundant Power Source: The D1 is powered from USB and includes a 2-stage redundant power source to ensure variations in USB bus power do not affect audio quality. Volume Control: A convenient volume control on the front panel allows you to easily adjust the sound level. Benefits: Impeccable Audio Quality: Every piece of music is enhanced by the D1's robust DAC and headphone amplifier, providing you with immersive, high-definition listening. Ultimate Connectivity: Connect almost any device to the D1, creating a seamless bridge between your digital files and your audio system. Uninterrupted Playback: The dual clock and USB transfer allow a flawless digital audio playback of up to 24 bits and any sample rate up to 192kHz. Customizable Sound Output: Choose between the traditional analogue RCA stereo sound or listen privately through the headphone jack, offering you options for every situation. Noise-free Environment: With the low distortion and noise features, your audio experience will always be pure, clear and crisp even at high volumes. Power Stability: Ensure that your audio experience is never interrupted or affected due to fluctuations in power thanks to its redundant power source. Complete Control: Adapt your audio in a flash with the volume control right at your fingertips, allowing you to be in charge of your listening experience at all times. Specification Product D1 24-BIT DAC/ HEADPHONE AMP DAC Type USB and Optical Inputs USB audio, SPDIF Optical D/A Converter AKM4396 USB Transfer Mode Asynchronous dual clock USB Controller TI1020B USB Device Class Type 1.1 or above Input Bit Depth 16 bit, 24 bit Input Sample Rate (USB) 32kHz-96kHz native playback, 188.2kHz & 192kHz re-sampled to 96kHz Input Sample Rate (Optical) 32kHz-192kHz native playback Outputs Analog RCA L/R stereo, Analog 3.5mm mini-jack stereo Full-Scale Output Level 2.0V RMS Output Impedance 2 ohms Recommended Headphone Impedance Range 10 ohms to 600 ohms Headphone Amplifier OPA2134 Optical Receiver CS8416 Frequency Response 10Hz-25KHz (+/- 0.5dB) SNR (DC to 20 kHz) >110dB THD+N (1kHz FS 96kS/s)