{"pageUrl":"https://comparethespecs.com/music-audio-production/audio-interfaces/what-are-the-4-channel-audio-interfaces-with-the-best-i-o-options","lastUpdated":"2026-09-13","totalProducts":1,"niche":"What are the 4-channel audio interfaces with the best I/O options?","description":"What are the 4-channel audio interfaces with the best I/O options?","products":[{"brand":"PreSonus","model":"Quantum HD 2 USB-C Audio Interface","price_gbp":258.31,"origin_country":null,"specs":{"bit_depth":"32","sample_rate":"44.1, 48, 88.2, 96, 176.4, 192","phantom_power":"+48 VDC","input_connections":"2 combo XLR-1/4 in mic/line/instrument, ADAT optical, stereo S/PDIF, MIDI","midi_compatibility":"5-pin female DIN MIDI I/O","number_of_channels":"20 input / 24 output","output_connections":"2 main 1/4 in TRS, 2 line 1/4 in TRS, 2 reamp, 1 headphone, ADAT optical, stereo S/PDIF, MIDI"},"confidence_score":null,"sources":[{"label":"B&H Photo Video","url":"https://www.bhphotovideo.com/c/product/1811738-REG/presonus_quantum_hd2_usb_c_audio.html","currency":"USD","source_country":"US","price":349.99,"price_gbp":258.31,"scraped_at":"2026-09-11T04:46:48.774149"},{"label":"Sweetwater","url":"https://www.sweetwater.com/store/detail/QuantumHD2--presonus-quantum-hd-2-usb-c-audio-interface","currency":"USD","source_country":"US","price":349.99,"price_gbp":258.31,"scraped_at":"2026-09-11T04:46:48.774149"},{"label":"Guitar Center","url":"https://www.guitarcenter.com/PreSonus/Quantum-HD-2-USB-C-Audio-Interface.gc","currency":"USD","source_country":"US","price":349.99,"price_gbp":258.31,"scraped_at":"2026-09-11T04:46:48.774149"}],"summary":"The PreSonus Quantum HD 2 is a 20-in/24-out USB-C interface with 32-bit resolution, sample rates up to 192 kHz, two MAX-HD preamps, ADAT and S/PDIF expansion, reamp outputs, and loopback audio. It suits producers, musicians, and project studios needing low-latency recording with flexible analog and digital connectivity.","ideal_for":"It suits users seeking a 4-channel audio interface with strong I/O options because it combines two combo mic/line/Hi-Z inputs with four line outputs, two reamp outputs, headphone output, ADAT, S/PDIF, MIDI, and 20-in/24-out operation."}]}