Chipset: 6K4+QCC3034+NE5532 QCC3034

Bluetooth: Version 5.0, supports AAC, SBC, APTX, APTX-LL, APTX-HD

Tube Model: 6K4

Replaceable tubes are: 6J1, 6J2, GE5654, 6J3, 6J4, 6J5, 6*1N, 6AK5, etc.

Operational amplifier chip: NE5532*2

Replaceable op amp chips: OPA2604, OPA2314, LM4562, JRC5532, etc.

Distortion: ≤0.15%

Frequency response range: 20hz-20khz (±1db)

Signal-to-noise ratio: ≥100db

High, medium and low adjustment range: ±6db

Input Mode: RCA, Bluetooth

Support input equipment's: mobile phone, tablet, computer, MP3, TV, etc. This amplifier does not support phono preamp.

Support Output equipment's:

1. Active speakers

2. Power amplifier + passive speakers,

3. Active subwoofer

Working power: DC12V,1-3A

Size: 130x123*30mm (excluding tube height)

Model Number: 3147801085

Package Include: 1 Pc x T2 Tube Preamp

1 Pc x power adapter(optional)