Description

 

20W*2 Pure Class A Power Amplifier HiFi Headphone Amplifier Finished L.PassAm Se

Description:
L.PassAm Se Pure Class A Amplifier is a desktop amplifier with excellent performace in low frequency, driving force and damping. Its SNR is better controlled. The output power of each channel is tested to be 20W @±21V & 1.2A quiescent current.

Features:
- Based on classic PassAm circuit and Pass A30, it outputs 20W*2.
- Six 15000 uf capacitors form a CRC filter with a total filtering capacity of 90000 uf. Left and right channels are filtered independently, which reduces ripple and improves overall resolution.
- Each channel's upc1237 systems protects your speaker from impact or being damaged when the amplifier turns on/off.
- It is designed with a volume knob.
- A midpoint trimming circuit is added to differential input section to address midpoint offset problem to some extent.
- 2-way audio input can be switched by Input Sel in the front panel. Signal relay is used to switch the input selection.
- Heatsink about 3kg is used together with aluminum shell for amazing heat dissipation.
- With adjustable output impedance, it supports for high-impedance headphones such as AKG.
- Quality is guaranteed. 6cps capacitors, 200W transformer, ALPS and the like are adopted.

Front Panel Introduction:
- Output Sel: You can choose headphone output or speakers output.
- Impedance Sel: It is an output impedance selection switch for headphone port, which can be used to various headphones. When a high impedance output is required, the switch is toggled downward. At this time, the power amplifier is suitable for 600 ohm high impedance headphones such as T1. It can greatly improve control and damping, making the sound more calm. When it needs to push a low-impedance earphone such as K701 that requires a large current, the switch turns upwards. At this time, dynamics and low frequency strength of headphones can be greatly improved. Attention: If some small earphones or even earbuds designed for direct push are used, it is recommended to turn the switch downwards. In this way, the output power is reduced correspondingly on low-impedance earphones to avoid being over drived or even damaged.
- Input Sel: There are two groups of input ports in the rear panel. You can choose one group via this button.

Basic Parameters:
- Max. Output Power (Distortionless): 20W*2
- Headphone Output Power: 400mW/600 ohms, 1500mW/32 ohms.
- Distortion: 1KHz sine wave 20W output <0.01%
- Input Sensitivity: <0.4Vrms
- Amplifier Voltage Gain: 22 times
- Power Supply Voltage: AC220V
- Max. Power Consumption: <150W

Package Included:
- 1 x Finished Amplifier

Note: Optional Colors: Black Panel, Silver Panel. Please choose the color you want when purchasing. Thank you!