Heareal Bluetooth Receiver DAC Audio Decoder Hifi Preamp (BB2134 Op Amp) BT5.1 for LDAC and APTX HD

Heareal Bluetooth Receiver DAC Audio Decoder Hifi Preamp (BB2134 Op Amp) BT5.1 for LDAC and APTX HD

Features:
- Hifi Bluetooth 5.1 receive decoder with excellent sound quality
- Lossless transmission for LDAC and APTX HD
- Advanced QCC5125 BT5.1 receiver chip supports for APTX HD/LDAC. It can support 24-bit/48kHz and 24bit/96kHz audio. It increases the bit rate to 576kbps and 990kbps
- Suitable for power amplifier and active speakers
- Custom design helps you enjoy high-quality music
- Audiophile DAC decoding chip ES9018 enables professional audio signals
- Quality op amp ensures high-density music signals; The op amp can be replaced
- Active crystal oscillator
- Dual-way 18V high-voltage circuit avoids distortion and gets a large dynamic and high-quality listening feeling; better SPDIF
- Has passed strict tests before delivery
- Switch on the front panel can be used over 20,000 times
- High-end power adapter: with CCC/UL/FCC quality certificates. Anti-shock surge and 90-264V; stable output and abundant kinetic energy. With over-current, power, electrostatic, low-voltage, over-temperature, magnetic field, short-circuit and over-voltage protection

Bluetooth Performance for APTX HD:
- Communication range: 20-300m/65.6-984.3ft
- Transmission speed: 3Mbps
- Latency: 40ms
- Bit rate: 24Bit/48KHz

Bluetooth Performance for LDAC:
- Communication range: 20-300m/65.6-984.3ft
- Transmission speed: 3Mbps
- Latency: 40ms
- Bit rate: 24Bit/96KHz

Specifications:
- Signal input mode: Bluetooth
- Signal output mode: optical fiber, coaxial, RCA, and headphone
- RCA output load: 10K-100K
- RCA output signal: 4Vrms
- Headphone amp output load: 8-300Ω
- Headphone amp output power: 280mW
- Coaxial signal output: 24Bit/96kHz
- Optical fiber signal output: 24Bit/96kHz
- Bluetooth receiving distance: greater than 20m/65.6ft when unobstructed
- Input voltage: DC5V/12V
- Digital signal output port: coaxial jack x1 + optical jack x1
- Audio signal output port: dual RCA x 1; 3.5mm two-channel headphone jack x1
- Bluetooth version/protocol: QCC5125 Bluetooth 5.1 (for LDAC/Aptx HD/Aptx Adaptive/Aptx)
- Optional op amp chip: BB2134/muses02 (DIP8; Op amp is pluggable for easy replacement)
- Dimensions: 70 x 105 x 33mm/2.8 x 4.1 x 1.3"
- Net weight: 0.3kg/lb

Package Included:
- 1 x L3 Main Unit
- 1 x User Manual
- 1 x Bluetooth Antenna
- 1 x Power Adapter

Differences between Op Amp IC:
1: BB2134's sound is warm, the midrange is slightly wide, and the bass is thick; much like the op amp of tube style, it is durable and does not prick
2: muses02 is a well-known op amp IC in recent years. It sounds excellent. High-frequency sounds are bright, mid-range sounds are accurate, and low-frequency sounds are elastic