XiangSheng PREAMP-708B Class A tube headphone amp & preamplifier

All items guaranteed 100% BRAND NEW in the original edition Box.
ONE-YEAR WARRANTY !!!

Product Description:
● Brushed aluminum faceplate, with all metal buttons and knobs.
●Gold coated RCA connectors.
●Adopt aluminum alloy brushed panel and metal knobs. The input terminal uses a gold-plated lotus base.
●The power cord adopts a three-plug interface, making it easy to upgrade the fever power cord.
●The volume potentiometer adopts a 16-type Taiwanese diaphragm potentiometer.
●The coupling capacitor adopts fever capacitors such as German WIMA and French Suellen. The transformer uses R cattle with excellent performance for power supply, with high efficiency and extremely low magnetic leakage.
●The high voltage uses electronic tube rectification to delay start-up, thus extending the life of the amplifier tube. It can also soften the sound.
●Use 2 large pond electrolytic capacitors for filtering to effectively suppress noise. The circuit adopts a non-negative feedback form, and the sound is looser and thicker.
●Circuit, having excellent performance.
●It is not only a pre-amplifier, but also a headphone amplifier. It is your nice choose.

Parameter:

●Dimensions: 180×80×270mm, (NOT cluding the dimensions of connectors and knobs)
●Input impedance: 100K
●Pre-amp Output Impedance: 600 ohm
●Headphone Amp Output Impedance: 32ohm-600 ohm( The engineer especially recommends thisamp for high Impedance)
●Signal to Noise Ratio: 89dB
●Frequency Response: 20Hz--30KHz
●Distortion: ≤ 0.01%
●Headpone Output Power: 500mW--250mW
●Supply Votage: AC100V-AC240V available 60Hz/50Hz
●Tubes: 6N3×1, 6N11×2, 6Z4×1,
●Net Weight: 2.5Kg
●Gross weight: 4.5Kg