Product details:

1. Use original 6J1 electronic tube TPA3221

2. The main filter capacitor adopts the original imported 1000UF/50V

3. High-precision chip resistor is selected to ensure good signal to noise ratio of the whole machine.

4. The PCB is made of 1.6mm thick double-sided plate, 2.0A thick copper, and the whole process of tin spraying to ensure the PCB quality of good passing performance of large and small current.

5. The input and output adopt gold-plated RCA lotus base, durable and beautiful!

6. The wiring of this board is reasonable, beautiful, and the bottom noise is small

7. Bluetooth uses Qualcomm QCC3034 module to support sbc, aac, aptx, aptx-HD

8. Bluetooth DAC adopts PCM5102 independent decoding

Basic parameters:

TPA3221 main features:

• Wide 7-V to 30-V Supply Voltage Operation

• Stereo (2 x BTL) and Mono (1 x PBTL) Operation

• Output Power at 10% THD+N

– 105-W Stereo into 4 Ω in BTL Configuration

– 112-W Stereo into 3 Ω in BTL Configuration

– 208-W Mono into 2 Ω in PBTL Configuration

• Output Power at 1% THD+N

– 88-W Stereo into 4 Ω in BTL Configuration

– 100-W Stereo into 3 Ω in BTL Configuration

– 170-W Mono into 2 Ω in PBTL Configuration

• 5-V Gate Drive or Built-in LDO for Optional Single-Supply Operation

• Closed-Loop Feedback Design

– Signal Bandwidth up to 100 kHz for High-Frequency Content From HD Sources

– 0.02% THD+N at 1 W into 4 Ω

– 60-dB PSRR (BTL, No Input Signal)

– <75- μ V Output Noise (A-Weighted)

– >108-dB SNR (A-Weighted)

– AD or HEAD Modulation Schemes

• Low-Power Operating Modes

– Standby Modes: Mute and < 1 mA Shutdown

– Low Idle-Current HEAD Modulation Scheme

– Single-Channel BTL Operation

• Multiple Input Options to Simplify Pre-Amp Design

– Differential or Single-Ended Analog Inputs

– Selectable Gains: 18 dB, 24 dB, 30 dB, 34 dB

• Integrated Protection: Undervoltage, Overvoltage,Cycle-by-cycle Current Limit, Short Circuit,Clipping Detection, Overtemperature Warning andShutdown, and DC Speaker Protection

• 90% Efficient Class-D Operation (4 Ω)

• Pin-Compatible Family of Devices with Voltageand Power-Level Options

Product name: D80 electronic tube digital power amplifier 2.1

Input voltage: DC24-32V 7A

Frequency response: 20Hz-20KHz

Input impedance: 47K

Signal-to-noise ratio: 116DB

Distortion:<0.01%

Output power: 210W+105W+105W (4 ohms)

External dimension: 157 * 126 * 44MM

Weight: 0.65KG

Accessories: one manual, one D80