Description

 

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