EPZ TP55 DAC and Headphone Amplifier

The EPZ TP55 is a mid-to-high-end audio dongle. Its core selling points are the dual CS43198 DACs and the high-power balanced output. The added 3.5mm microphone HD call support makes it more versatile, perfectly balancing high-fidelity music listening with daily communication needs, making it an all-in-one audio solution.

Dual-DAC Architecture: Utilizes two Cirrus Logic CS43198 flagship-grade DAC chips for high-resolution, low-distortion audio decoding.

Powerful Output: A high balanced output power of 551mW (@32Ω) allows it to easily drive most over-ear headphones and high-impedance in-ear monitors.

High-Resolution Support: Supports PCM formats up to 768kHz/32bit and native playback of DSD256.

Practical Functionality: Supports 3.5mm microphone for HD calls, ensuring you never miss an important call while enjoying high-fidelity music. Fully compatible with mainstream communication and conferencing apps.

Specifications
Brand: EPZ
Model: TP55
DAC Chip(s): Cirrus Logic CS43198 × 2
Op-Amp(s): SGM8262 × 2
USB Controller: CB5100
Supported Audio Formats:
PCM: Up to 768kHz / 32bit
DSD: DSD64, DSD128, DSD256 (Native)

Output Power:
3.5mm Single-Ended: 151mW (@32Ω, THD+N < 1%)
4.4mm Balanced: 551mW (@32Ω, THD+N < 1%)

Performance Metrics:
Signal-to-Noise Ratio (SNR): ≥ 135dB (A-Weighted)
Dynamic Range (DNR): 135dB (A-Weighted)
Total Harmonic Distortion + Noise (THD+N): 0.000140% (1kHz / 32Ω)
Output Connectors: 3.5mm Single-Ended / 4.4mm Balanced
Frequency Response: 20Hz - 40kHz

Microphone Support: Supports 3.5mm microphone input for high-definition voice calls