BT

HiBy W5 - Unparalleled Bluetooth Hi-Fi Headphone Amplifire,UAT, Sampling Frequency Up to 192kHz, Bluetooth 5.0, LDAC, apt-X HD, 20 Hrs Playtime

Excellent IEMs with rich and dynamic sound , include BT and huge variety of tips for maximum comfort.

•  DAC: Asahi Kasei AK 4375a × 2 
•  Input: Bluetooth A2DP or USB DAC 
•  USB DAC: USB Audio Class 1.0 (Up to 48 kHz / 16 bit)
•  Output:  3.5 mm (Unbalanced) /  2.5 mm (Balanced / 4-Pin) 
•  Output Level:  3.2 Vpp (Unbalanced) /  6.4 Vpp (Blanced) 
•  Output Impedance: 1 Ω (Unbalanced / Blanced) 
•  SNR:  109 dB (Unbalanced) /  110 dB (Blanced)
•  Bluetooth Version: 5.0 
•  Profile: HFP / HSP / A2DP / AVRCP / LDAC
•  Corresponding Codec: aptX / aptX HD / AAC / SBC 
•  Maximum Communication Distance: about 10 m
•  Battery Capacity: 350 mAh (Lithium Polymer) 
•  Continuous Playing Time: about 14 hours 
•  Body Size: (W) 30 × (H) 53 × (W) 15 mm
•  Body Weight: about 20 g

• Transform xDuoo XD-05/XD-05PLUS into Bluetooth DAC&Headphone Amplifier.
• Stable connection with ultralow delay.
• Supports APTX/APTX-LL/APTX-HD/LDAC.
• Compatible with IOS/Android wireless connection.
• 15 hours battery life, 2 hours fast charge.
• Bluetooth Version 5.0
• Support Bluetooth Audio Code SBC, AAC, APTX, APTX-LL, APTX-HD, LDAC
• Maximum Communication Range: About 10 meters
• Suitable for Chord MOJO as BT via COAX 3.5mm !! (watch the video)

• Bluetooth DAC & Headphone Amplifier AKM AK4452
• Stable connection with ultralow delay.
• Supports Bluetooth 5.0 APTX/APTX-LL/APTX-HD/LDAC.
• Output power 300mW @ 32 Ohm
• USB PCM : 16-32bit/44.1k-384KHZ DSD64-256
• THD+N USB: 0.001%@1KHZ AUX IN: 0.0009%@1KHZ    
• Compatible with IOS/Android wireless connection.
• 15 hours battery life in BT, USB 8 hours, 2 hours fast charge.
• Bluetooth Version 5.0
• Maximum Communication Range: About 10 meters

• Bluetooth DAC & Headphone Amplifier ES9018K2M
• Screen 1.3 inch OLED, 128*64 pixels
• Stable connection with ultralow delay.
• Supports APTX/APTX-LL/APTX-HD/LDAC.
• USB PCM : 16-32bit/44.1k-384KHZ DSD64-256
• THD+N Optical 0.00087% Coaxial 0.00087% Aux 0.07%        
• Compatible with IOS/Android wireless connection.
• Bluetooth Version 5.0 Qualcomm's CSR8675
• Maximum Communication Range: About 10 meters

• Premium Dual DAC Chipset featuring 2*ES9038Q2M DAC chips.
• High-Performance XMOS XU208 USB Signal Receiver
• Qualcomm CSR8675 Bluetooth Chip
• LDAC, AptX HD, AptX LL, AptX
• 6.35mm Single-ended headphone output,4.4mm Balanced headphone output.
• PCM up to 32-Bit/768kHz, DSD up to DSD512
• USB Type-C input support.

Not much to say.... just simply BRILIANT !!!!

https://www.headpie.net/2020/06/centrance-hifi-m8v2-detailed.html

"And SO FAR I AM THRILLED with the sound and performance of the HiFi M8 V2. The hot side can not only drive difficult 300 ohm Sennheiser headphones but can actually drive them with authority and skill befitting the performance of a desktop amp..."