6J5 F5 Tube Preamplifier Bluetooth 5.0 Lossless Player Headphone Amp APP

 Advantages:

- Bluetooth 5.0 input

- Tube preamplifier

- U disk input

- TF card input

- RCA audio input

- Independent adjustment of treble and bass

- USB external sound card

- NE553 op amp chip

- 3.5MM tube headphone amplifier

Features:

- Wireless operation via phone APP. Audio source channel mode switching. U Disk/TF Card file management. Music file directory selection. Control playing progress, select songs. Volume gain adjustment. Preset EQ selection.Loop playback mode selection. Radio station search on demand

- Delicate sound quality, clear positioning, restore the real tone

- Bluetooth 5.0 tube preamplifier for lossless music player. Support wireless Bluetooth 5.0/U disk, TF card. Can be connected to a computer as a USB sound card. Support audio signal input, treble, bass adjustment. Tube headphone amp. APP remote control. FM radio

- Bluetooth 5.0 receiver chip

- Support a variety of operation methods: 1. Mobile phone Bluetooth (for Apple, Android), support 99% of the market's mobile phone Bluetooth connection. 2. Support for Apple, Android APP remote control; can control the playing mode, select the input terminal, view U disk and TF card's music catalog, select tracks; FM custom EQ and select a variety of preset EQ programs (rock, pop, jazz, etc.). 3. Independently adjust the treble and bass knobs. 4. Independent amp output

- Support U disk, computer USB and TF card input. Support MP3/WAV/APE/FLAC and other lossless format music players to use

- Built-in independent amp circuit output, can be used as a tube headphone amp. The 3.5MM headphone output jack can meet more needs of customers

- HIFI-class electronic tube. Using 6J5, the human voice is naturally resistant to hearing, the high frequency is delicate, and the low frequency sound is fuller. Pluggable tubes can be upgraded to 6*5N, 6AH6, 6AN5, etc.

- Dual operational amplifier NE5532

- Multiple audio inputs, suitable for different environments. Including rich and complete audio input ports: BT5.0/U disk/TF card/RCA input/USB computer input. Applicable to most devices, such as desktop computers, tablet computers, mobile phones, MP3, TV, CD, VCD/DVD, Blu-ray players, to achieve high-quality lossless audio transmission and enjoy HIFI sound quality

- Suitable for VCD, DVD players, earphones, mobile phones, TVs, amplifiers, computers, active speakers, Walkman players

Specifications:

- Bluetooth version: HD5.0 (Can connect to devices above Bluetooth 3.0)

- Adjustment range: treble ±6db; bass ±10db

- Audio input: Bluetooth/TF card/U disk/AUX audio

- Audio output: RCA audio/3.5mm earphone

- Amp impedance: 16-150Ω

- Frequency response range: 20Hz-25khz (±3dB)

- Distortion: 0.1%

- SNR: ≥105dB

- Input voltage: DC12V 2A (5.5*2.5mm)

- Dimensions: 131 x 128 x 35mm/5.2 x 5 x 1.4" (excluding the sizes of protruding parts)

- Net weight: 514g/1.1LB

Package Included:

- 1 x Set of Tube Preamp