headphone amp Q701 HD650
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Item#: MAHP0180
$66.67 (unit price)
Quantity:
$66.67 (unit price)
Quantity:
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| Quantity | Unit price (USD) |
| >= | $ 66.67 |
| >= | $ 55.56 |
| >= | $ 47.62 |
Features and Specifications
Mini Lehman amp class A HIFI headphone amplifier Q701 HD650 DT880
With PO output port, it can be used directly as the preamplifier, and automatically disconnected after plugging in the earphone.
With PO output port, it can be used directly as the preamplifier, and automatically disconnected after plugging in the earphone.
The op amp and the transistor are all high quality The same OPA2134PA op amps as the original Lehmann are equipped with gold-plated chip holders for easy replacement of other op amps. And LME49720 op amp is optional! Fairchild Fairchild BC550C/BC560C. And BD139-16/BD140-16 is power tube, the suffix ‘-16’ is very different from the ordinary BD139/BD140, and the sound quality and level are better!
The difference between the OPA2134 op amp and the LME49720 is that the OPA2134 has a charm, but it is not as detailed as the LME49720. The LME49720 is balanced and high-quality, the sound is unbiased, and the adaptability is wide, but the front end is not good or the earphone is designed for direct push.
Mini size.
Built-in the same 4-speed gain adjustment as the original, 0dB/10dB/18dB/20dB, jump cap design, delivery default 18dB. Please email us if you want to change.
Performance parameters:
Supply voltage: AC 15V (DC can not work, can not be powered by charger or constant current source!) This amp is not a portable machine, there is no battery inside, you need an external power supply to work. Self-supplied power supply needs 15W.
Output power: 200mW/300 ohms, 400mW/60 ohms (please be sure to adjust from a small volume, amp design! Never use it as a power amplifier!)
Output impedance: PHONE--5 ohm, LINE 2--60 ohm
Amplification gain: 0dB, 10dB, 18dB, 20dB (built-in jumper cap switch)
Frequency response range: 10Hz~35kHz
Signal to noise ratio: >105dB (0dB)
THD: <0.001%
Input terminal: 1 3.5mm (LINE 1)
Output terminal: 1 set of RCA (commonly known as lotus mouth. LINE 2, used for power amplifier or active speaker)
Headphone jack: 1 3.5mm (PHONE)
Outer dimensions: height 32mm, width 66mm, length 127mm (manual hand measurement, height including foot pad, length including RCA and knob)
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