Fangrui Product Details 1.upgrade Chip, Using Pcm5122 Chip Of High End, Using I2s Interface, And Can Be Through The I2c Interface To Adjust Audio Volume Parameter Adjustment; Supports 16 To 32 Bit Audio Data Format; Distortion And Dynamic Is Very , Support The Tall Sampling Rate Of 384khz, 112db Dynamic Range, Degree Distortion -93db.for With No Boom Run 120db Squelch Signal To Noise Ratio (snr).soft Upward Or Downward Oblique Wave And Analog Squelch. 2.pcm5122 Also Integrated Negative Charge Pump, The Output Without Dc Blocking Capacitor; 2.1vrms Ground Center Output; Ability To Suppress Very Good Band Noise. Through The Load Support Low To 1k, Pcm510xa Can Drive A Plurality Of . 3.output Ports With Gold Plated Rcv Dual Terminal And Gold-plated 3.5mm Headset Seat. 4.the Isolated Power Supply Design, Make The For Raspberry Pie Power Supply And Part Of The Power Supply Isolation, And Through The Bead Altogether Without Mutual Interference, The Current Sound 5.welding Free, Direct Plug Expansion Board Can Use, And The Use