Description

LESS BX1 Single End HEADPHONE AMP.

Portable fully discrete single-ended headphone amplifier

Introduction:

Portable player products are constantly innovating, and various DAC chips perform differently. ESS9038, AK4499, and discrete R2R have begun to be developed and applied in portable products, making portable products a step closer to Hi-End and meeting Walkman HIFI requirements.

The Less BX1 unbalanced full discrete headphone amplifier is designed to match the more powerful portable player products, with the purpose of giving full play to its greater sound effect, with minimal sound coloration and stronger drive control as the development concept, which more directly reflects different playback The sound quality of the instrument!

The BX1 signal amplifier stage adopts the principle of current mirror current transmission circuit. The whole machine uses all discrete components, transistors, etc. It is a completely non-traditional voltage negative feedback design, using double triodes with extremely high consistency, and all work in CLASS-A A class status. The line is very simple, the audio signal channel is short, the sound quality performance is extremely high and the sound coloration is very low, the sound details and weak sounds are enhanced in the sense of hearing, and it is more delicate and transparent.

The BX1 output stage adopts a zero-distortion diamond-shaped buffer amplifier similar to the Marantz SA3 Buff, and uses two pairs of classic beautiful sound DB139/140 as the output power tube, and also works in the CLASS-A state.

BX1 Fully Discrete Unbalanced Headphone Amplifier

Specifications and parameters (Specification)

Total Harmonic Distortion: 0.0002% (1Khz)

Signal-to-noise ratio: >115DB (minimum volume); >98DB (maximum volume)

Power output. Output Power: 165mW/600ohm; 330mW/300ohm; 1000mW/100ohm; 3300mW/32ohm

Frequency response: 10Hz-25KHz (-0.5DB) Color: dazzling blue

Gain: 15DB (HIGH); 10DB (LOW)

Charging voltage: DC IN 5V (TYPE-C)

Battery: 3.7V polymer lithium battery

Capacity: 5000mAh

Overall size: W85XL125XH22mm

Net weight: 240g

Color: dark green

Battery life: about 8 hours

(Original packaging accessories: BX1 complete machine*1, TYPE-C cable*1, 3.5mmTO3.5mm machine cable*1)