Design as Texas Instruments (TI) top-TPA6120A2 headset driver chip as core, TPA6120A2 is an existing feedback amplifier circuit, conversion rates up 1300V/ Î¼s. Distortion of just 0.00014 % THD + N, 120dB vibrant range, 120dB SNR. TPA6120A2 really powerful driving force, the maximum output present approximately 700mA. Encounter the large impedance earphones. With see above indicators, TPA6120A2 is placed as HI-FI TI class headset amplifier chip.
Design as a front end to Burr Brown OPA2604AP enlarge.OPA2604AP for high-performance audio system design unique op amp ã€‚ low harmonic distortion, low noise, high gain bandwidth characteristics.Dual FET-input OPA2604 supplies a broader vibrant range, the noise is more resistant to listen. Typically made use of in expert audio equipment, spectrum analyzers and other high-end devices. (Old version without this part circuit).
Use Texas Instruments (TI) high-performance op amp NE5534 as headset security circuit, high sensitivity earphones beginning voltage security circuit security is 0.7 V, than normal amp security circuit sensitivity doubled. Secure your earphones, we are more expert. (Earlier variations do not have this part circuit).
Using partial pressure methods, Use high accuracy potentiometers for balance calibration, a high degree of favorable and negative voltage balance. Another specialized high ability filter capacitor filter, power fairly clean. Optimum inhibition of low-noise, so that the headset can be heard nearly no noise, let your ears more comfortable.
Input interface: 3.5 mm/RCA, stereo input (with switch).
Output interface: 6.35 mm headset Block.
Input Level: 400mv to 2V.
Voltage:100 -240 ACV.
Output power: 150mw/ 250Î©, 300mW/ 120Î©, 1000mw/ 32Î©.
2 way with the switch input circuit (3.5 headphone holder and gold-plated RCA)----Replacement of the input signal is no longer need to pull line, just select the switch panel. high precision power divider circuit. Guarantee the stability of the circuit and reduce the DC drift output.
High-precision voltage divider circuit--- Ensure the stability of the circuit and reduce the output DC drift
Advanced input and output connections Block---Japan PSE certified power distribution Corrugated low, radiation small, durable
Audio channels all use the U.S. military regulations DALE fever resistance----Low noise, good sound quality. Deficiencies: the price is 20-100 times than the normal resistance.
High-grade Aluminum Shell,drawbench erodegrain Oxidation Process.----Additional 6.35 to 3.5 Docking Station for the use of HI FI headphones.