QULOOS - MUB5 Portable R2R DAC/AMP

The QULOOS MUB5 is a portable DAC and headphone amplifier with advanced audio processing and multiple input options, including Bluetooth.

• The device features a discrete 19+5 bit segmented R2R ladder architecture with 178 custom resistors.
• It supports high-res PCM and DSD playback with customizable oversampling and NOS filter modes.
• Power is supplied via 20 isolated LDO groups and LTC6655 references, ensuring ultra-low noise.
• The amp uses an OPA627 output buffer and discrete FZT transistors, offering selectable gain and up to 2500mW of power at 32Ω.
• It includes multiple inputs such as USB, coaxial, optical, Line-in, and Bluetooth (LDAC, aptX-HD).
• The device has a 5000mAh battery for 8 hours of playtime and can be powered via 12V DC input.
• The CNC-machined chassis features advanced shielding for interference-free audio.