Maurizio Taiuti

Finished HiFi HD650 K701 Stereo Headphone Amplifier Reference Lehmann Circuit

Description: Details:1: Transformers: The new British origin Talema toroidal transformer2: New Philips original 40V 4700uF main filter electrolysis3: Input coupling capacitance: New Siemens Promise Audio Capacitor4: Other small-capacity capacitors: the new WIMA non-polar capacitor5: Transistor: original BD139 BD140; BC 550 BC560, and use the tester to pair6: Resistance: British WEL no sense resistor7: Original ALPS RK27 potentiometer8: Neutrik 6.35 headphone output terminal9: TYCO self - recovery insurance10: Imported 4N oxygen-free copper audio signal line11: American CMC 24K gold-plated RCA terminalParameters:Frequency response: 10Hz (-0.3dB) -35KHz (-1dB)Adaptation impedance: 8-2kΩDistortion: <0.001% (6mW / 300 ohms)Output power: 300 ohms / 200mW, 60 ohms / 400mWInput impedance: 47K ohmsInput interface: RCAOutput interface: 6.3mm interface × 2Size: 280x110x44mmWork voltage :AC115V and AC230V optionalAbout the useFirst of all, to understand the correct use of sound system habits, headphone amplifier off state, turn off the volume knob to the smallest place, first open the sound source, and then open the headphone amplifier, and then gradually increase the volume, so to avoid the boot instantaneous impact to the headsetOperational amplifier selection: Lehmann original machine is the use of OPA2134PA dual op amp, our headphone amplifier factory is also standard with this op amp. Our circuit board is equipped with the op amp socket, the customer can try to replace the other dual op amp (do not insert the opposite direction)Gain selection: The headphone amplifier factory default setting is 10dB gain. Recommended to set to 10DB, specific to the individual listening to prevail.Tips: set the gain when the best turn off the power, and the volume off to a minimumPackage Included:Finished headphone amplifier X1Not included any cables

Price: 135 USD

Location: Guang Zhou

End Time: 2023-11-06T10:16:04.000Z

Shipping Cost: 42 USD

Product Images

Finished HiFi HD650 K701 Stereo Headphone Amplifier Reference Lehmann CircuitFinished HiFi HD650 K701 Stereo Headphone Amplifier Reference Lehmann CircuitFinished HiFi HD650 K701 Stereo Headphone Amplifier Reference Lehmann CircuitFinished HiFi HD650 K701 Stereo Headphone Amplifier Reference Lehmann CircuitFinished HiFi HD650 K701 Stereo Headphone Amplifier Reference Lehmann CircuitFinished HiFi HD650 K701 Stereo Headphone Amplifier Reference Lehmann CircuitFinished HiFi HD650 K701 Stereo Headphone Amplifier Reference Lehmann CircuitFinished HiFi HD650 K701 Stereo Headphone Amplifier Reference Lehmann CircuitFinished HiFi HD650 K701 Stereo Headphone Amplifier Reference Lehmann CircuitFinished HiFi HD650 K701 Stereo Headphone Amplifier Reference Lehmann CircuitFinished HiFi HD650 K701 Stereo Headphone Amplifier Reference Lehmann Circuit

Item Specifics

Return shipping will be paid by: Buyer

All returns accepted: Returns Accepted

Item must be returned within: 30 Days

Refund will be given as: Money Back

Amplifier Class: Universal

Compatible Brand: Universal

Type: Headphone

Compatible Model: Universal

Features: Universal

Color: Silver front

MPN: Does not apply

Brand: SENGTERBELLE

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