Listen in recording studio quality. USB DAC & Headphone Amplifier for iOS, Mac & PC Apogee Groove is a portable USB DAC and headphone amplifier for Mac and PC, delivering studio-quality sound. Groove incorporates the same high-quality audio technology used in the world's top recording studios, bringing studio-quality sound to your laptop. Simply connect Groove directly to your computer and headphones (or powered speakers). With simple operation, you'll experience a clear difference in the sound quality of a top-class recording studio. Apogee has been an innovator and industry leader in digital audio recording technology for 40 years. Apogee's history of products represents the evolution of digital recording, and Apogee products are trusted by the world's top artists and engineers as essential gear for their daily recording and production, across genres including rock, classical, hip-hop, country, reggae, and jazz. Groove is the first device to deliver the ultimate listening experience with Apogee sound quality in a simple, mobile style. It unleashes the pristine sound quality of high-resolution audio sources and reproduces the stunning clarity and detail of streaming services like Apple Music and Tidal.・Compatible with iOS, Mac & PC (USB 2.0) - Maximum sample rate 32 bit/192kHz・ESS Sabre DAC ・Constant current drive with ultra-smooth frequency response for all types of headphones ・Quad Sum DAC with 4 DACs per channel for the highest dynamic range and lowest distortion - Asynchronous high-precision clock - Maximum output level: 225mW (30Ω), 40mW (600Ω) Multi-color LED indicators for status and level. USB bus powered. Top panel buttons for output level control and mute. Portable and compact size (95mm L x 30mm W x 16mm H 45.35 g) - Premium aluminum body for superior durability Groove's unique circuit design: An innovative output stage with constant current drive (CL) ensures linear, faithful reproduction of headphones, regardless of the impedance of the wide variety of headphones on the market. Groove's output stage adjusts the output voltage to match the impedance of the connected headphones, smoothly compensating for the changes in characteristics that occur with typical headphone outputs, ensuring faithful reproduction. Groove uses Quad Sum DAC technology, with four DA converters per channel, delivering the highest dynamic range and lowest distortion (THD+N) in its class. The ESS Sabre32 32-bit HyperStream DAC with Time Domain Jitter Eliminator delivers unparalleled dynamic range, ultra-low distortion, and crystal clear audio. Computers also have built-in DACs. However, built-in DACs are not as high quality as Groove. Details become unclear, and depth and three-dimensionality are lost. The sound quality lost in the DAC cannot be recovered, even if the sound quality of the following headphones or speakers is excellent. This is why the sound quality of the DAC is extremely important. Groove allows you to listen to music in the sound quality in which it was created. It is a device that allows you to experience the true nature of the music. D/A conversion:・THD+N: -109 dB with 600 Ohm load @ 16 dBu・THD+N: -101dB with 30 Ohm load @ 10.5 dBu Dynamic range: 119dB a-weighted Frequency response: 10Hz - 20K +/- 0.1dB Maximum output level: 225mW into 30 Ohm / 40mW into 600 Ohm・8 channel ESS DAC (4 DACs per channel) Product dimensions (L x W x H): 95 mm x 30 mm x 16 mm・Weight: 45.35 g・Power supply: 5V, 500mA, USB ●Package contents: Groove Anniversary Edition USB A cable, USB C cable, carrying pouch #Audio Interface #Audio Interface