JC Acoustics UDP-M3: Hi-Fi Sound Anywhere

JC Acoustics UDP-M3 is an innovative portable Bluetooth USB DAC and headphone amplifier that merges the capabilities of traditional stationary devices with the ease of a compact design. After two years of development, the team has refined the product to deliver impressive power and exceptional sound clarity.

The device features a Qualcomm QCC5125 Bluetooth chip that is compatible with LDAC, aptX HD, and aptX Low Latency codecs, providing reliable transmission of high-resolution audio. It utilizes two AKM4493SEQ chips for digital conversion, delivering rich sound with an expansive dynamic range. The XMOS XU316 USB controller ensures precise data processing, working in conjunction with FPGA algorithms and clock generators that utilize Japanese NDK femtosecond clocks to minimize jitter and distortion.

For high-performance headphones, the device features a balanced 4.4 mm output capable of delivering up to 1500 mW per channel at 32 Ω, while the standard 3.5 mm jack provides up to 380 mW. The integrated 4200 mAh battery ensures extended usage and supports rapid charging, achieving full charge in just 1.5 hours with the help of a Texas Instruments controller. Additionally, a USB power mode is available for desktop setups.

The 1.28-inch color display offers an intuitive interface for adjusting settings. The construction incorporates Japanese Panasonic film capacitors, precision resistors with a tolerance of 0.1%, and high-quality silver Jensen wires. The fully balanced circuitry utilizes operational amplifiers OPA1656, OPA1642, and a pair of TPA6120A2RGYT.

The JC Acoustics UDP-M3 is tailored for individuals seeking exceptional Hi-Fi sound quality in various environments—be it at home, during travel, or at the office. It is important to note that the device generates heat due to its high power output and compact design, although this does not compromise its operational stability.

JC Acoustics UDP-M3 Specifications:

• DAC: AKM 4493SEQ × 2 (fully balanced circuit)
• Bluetooth: Qualcomm QCC5125, version 5.1, support LDAC / aptX HD / aptX Low Latency (24bit/96kHz)
• USB controller: XMOS XU316
• Signal Processing: FPGA with digital shaping and synchronous RECLOCK, global clock synchronization
• Audio support: DSD512 / PCM 384kHz
• Headphone Output: 4.4mm balanced (1500mW @ 32Ω) / 3.5mm single (380mW @ 32Ω)
• THD+N: <0.0008% @ 1kHz, 1Vrms (A-weighted, 4.4mm balanced)
• SNR: 118 dB
• Dynamic range: 123 dB
• Channel Separation: -118 dB @ 1 kHz
• Battery life: 8 hours of playback
• Dimensions: 104 x 66.5 x 14.8 mm
• Weight: 165 g
• Charging: Fast in 1.5 hours (control chip from TI), can be charged during operation
• Screen: 1.28-inch color touchscreen

Price : $412

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