“What the world needs now is love, sweet love” according to Hal David and Burt Bacharach. They forgot to mention — and another dongle DAC.
Questyle had a few tricks up its sleeve that they pulled out and put into their M12 DAC including Current Mode Amplification and Smart Impedance Detection, the former delivering vanishingly low distortion of 0.0003% THD and astonishing noise levels of -130 dB, while the latter automatically sets the gain level to match [your headphones]: low gain for low-impedance/high sensitivity headphones, high gain for high-impedance headphones.
The M12 employs the ESS ES9281AC DAC chip, also found in the THX Onyx Portable DAC ($199.99 review coming soon), which can process PCM up to 32-bit/384 kHz, DSD 256, and decode MQA. There’s a female USB-C port on the input side, and a 3.5MM analog output on the other. Type-C to USB-A and Type-C to USB-C cables are included.
The Questyle M12 Mobile Headphone Amp & DAC is available now with a retail price of $139.99.
Features & Specifications
Current Mode Amplification
Smart impedance matching from 8 to 600 Ohms
Ultra low distortion 0.0003%
ES9281AC chip (Decodes up to PCM 384kHz/32bit and DSD256)
Supports MQA decoding
Supports TRRS in-line mic input
Compatible with Android 5.0 & above and iPhones (Lightning cable not provided)
Dimensions: 5.1 X 1.65 X 0.81 cm
Built-in smart detection circuit will automatically self-adjust the output power to fit different impedance of headphones.
RL=16Ω – Po=46.11mW;
RL=32Ω – Po=26.71mW;
RL=300Ω – Po=12.26mW;
When the detected impedance is less than 70Ω, M12 will self-adjust to low gain output. When it is more than 70Ω, M12 will self-adjust to high gain output. When it is more than 600Ω, M12 will automatically switch to 2Vrms line out.
US Distributors Website: Bluebird Music