The D175 uses an ES9038Q2M decoding chip for fast and stable performance Use Bluetooth input or fiber coaxial input, you can get a high resolution effect. RCA seats are gold-plated for greater durability The large heat sink ensures long-term stability, and the large capacity filter capacitor makes the power supply more stable and the ripple is lower. 129/5000 The D175 uses an ES9038Q2M decoding chip for fast and stable performance Use Bluetooth input or fiber coaxial input, you can get a high resolution effect. RCA seats are gold-plated for greater durability The large heat sink ensures long-term stability, and the large capacity filter capacitor makes the power supply more stable and the ripple is lower. Potentiometers are sealed and more durable. Product model: D175 Input method: RCA, COAX, OPT, Bluetooth BLUE Power amplifier chip: TPA3251 Bluetooth version: Bluetooth 5.1 Frequency response range: 20-20KHZ Power supply: 24V-36V Output power: 175W x 2/4Ω Total harmonic distortion: 0.05% Adaptive horn: 10W~200W 4Ω8Ω Bluetooth transmission distance: 10 meters Protection mechanism: power reverse protection, short circuit protection Self-restoring overheat protection Size: 100MM x 116MM x 60MM DC power socket specifications: 5.5 x 2.5 color: Black Material: aluminum Package Contents: 1 x Power amplifier 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.