SMSL Audio SP400 Headphone Amplifier

Fully Balanced THX888 design
SP400 not only features THX888, but also uses many 0.1% high-precision low temperature drift resistors and components in the design. The PCB uses 6-layer immersion gold circuit board, and dual customised power modules provide stable and reliable power output guarantee. All the cost is only to achieve the desired HIFI sound quality, lower distortion, and listen to the true and natural expression. SP400 is not only first-class parameters, the sound goes to the next level!

THX has patented feedforward error correction technology, lower sound colour and low distortion, which makes the listening experience real and natural.

CNC Precision Machining Aluminium Housing
By using anodising technology and the chamfering process, the unit has a high-end appearance which is exquisite and durable.

The highly popular THX888 circuit design
THX patented audio amplifier circuit (THX AAAtm) 888 is linear double amplifier circuit with feedforward error correction technology. Eliminates the distortion mechanism of traditional amplifier circuits, reduces harmonics, intermodulation and crossover distortion. The headphone output jack is made in Japan and the preamp output is fully balanced. The volume control is a high precision 256 level relay. Using two pieces of customised 24W high-efficiency low noise power supply guarantees excellent audio performance and output efficiency.