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J.C ACOUSTICS UDP-5 DAC Headphones Amplifier
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Accessories for this product
Find here a selection of useful and/or essential accessories for this product. These are specially selected by the Audiophonics team according to the characteristics of the product.
J.C Acoustics UDP-5 DAC Balanced Headphones Amplifier 2xES9039Q2M 32bit 768kHz DSD512
The J.C Acoustics UDP-5 is a DAC and headphones amplifier based on audiophile components. It features two ES9039Q2M DAC chip and an XU216 interface for support of high-resolution sampling rates up to PCM 32bit 768kHz and DSD512. It also boasts a balanced Class AB headphone amplifier circuit with four TPA6120A2 chips for output power of up to 7500mW under 32 ohm on its balanced headphone output.
The device is completed by a high-performance power supply consisting of a 60VA transformer and no less than 6 filter capacitors. Each component is independently powered for low noise. The front panel features an attractive 3” color IPS display with a practical, modern interface. As for connectivity, the UDP-5 has plenty to offer, with numerous digital inputs, two headphone outputs (6.35mm jack/4.4mm jack) and two analog outputs (RCA/XLR).
J.C Acoustics UDP-5: Audiophile architecture
The UDP-5 benefits exclusively from high-quality components and an audiophile architecture to get the best out of your audio sources.
J.C Acoustics UDP-5: 2xES9039Q2M DAC and XMOS XU216 interface
The UDP-5's digital-to-analog conversion is based on two ESS ES9039Q2M DAC chip and an XMOS XU216 USB interface. This enables it to support high-resolution sampling rates up to PCM 32bit 768kHz and DSD512. In addition, an SC8422 chip supports optical / coaxial SPDIF signal processing up to 24bit 192kHz.
J.C Acoustics UDP-5: A balanced headphones amplifier circuit
The headphones amplifier stage features a balanced architecture with four OPA1642 and four TPA6120A2 amplifier chips for detailed, powerful sound reproduction. This configuration offers excellent dynamics and resolution across all frequencies. As a result, the UDP-5's headphone outputs deliver substantial power, making it a headphone amplifier capable of driving high-end, high-impedance headphones.
Balanced 4.4mm jack headphones output power:
- 6800mW @ 32 ohm
- 720mW @ 300 ohm
- 360mW @ 600 ohm
6.35mm jack headphones output power:
- 1680mW @ 32 ohm
- 180mW @ 300 ohm
- 90mW @ 600 ohm
J.C Acoustics UDP-5: Color IPS display
The front panel of the UDP-5 headphones amplifier DAC features a beautiful 3” color IPS display. This is accompanied by a modern, practical interface. In fact, it provides access to the various information concerning the current playback, as well as navigation between the device's different parameters.
J.C Acoustics UDP-5: A low-noise power supply
The UDP-5's power supply circuit is based on an optimised 60VA custom-made OFC copper transformer, six filter capacitors totalling almost 30,000µF and a regulated five-line power supply, allowing a stable and clean current to be delivered independently to each component of the unit. This enables the UDP-5 to achieve exceptional audio performance.
J.C Acoustics UDP-5 overview
| 1 | Color IPS display |
| 2 | Balanced 4.4mm headphones output |
| 3 | Single-ended 6.35mm headphones output |
| 4 | Multifunction button |
| 5 | Balanced XLR output |
| 6 | Single-ended RCA output |
| 7 | Coaxial input |
| 8 | Optical Toslink input |
| 9 | I2S LVDS input via HDMI |
| 10 | USB-B input |
| 11 | Power supply |
Technical characteristics
| Specifications | |
|---|---|
| Product type | DAC / Headphones amplifier |
| DAC chips | 2x ES9039Q2M |
| Amplification chips | 4x TPA6120A2 |
| OPA | OPA1642 |
| Inputs | 1x USB-B 1x Coaxial 1x Optical Toslink 1x I2S LVDS via HDMI |
| Outputs | 1x Single-ended RCA output 1x Balanced XLR output 1x Balanced 4.4mm jack headphones output 1x Single-ended 6.35mm jack headphones output |
| Supported sample rates | USB: PCM 32bit 768kHz, DSD512 (DoP & Native) SPDIF coaxial and optical toslink: 24bit 192kHz I2S LVDS via HDMI: PCM 32bit 768kHz, DSD512 (DoP & Native) |
| DAC specifications (balanced XLR output) | |
|---|---|
| Frequency response | 20Hz-40kHz (+/-0.2dB) |
| THD+N | 0.00021% (-6dB @ 1kHz, A-WT) |
| SNR | 118dB |
| Channel separation | -131dB @ 1kHz |
| Line output power | RCA: 2.3Vrms XLR: 4.6Vrms |
| Headphones amplifier specifications (balanced 4.4mm jack output) | |
|---|---|
| THD+N | 0.00030% (7Vrms @ 1kHz, A-WT) |
| Frequency response | 124dB |
| Channel separation | -129dB |
| Output power | 4.4mm balanced jack: 6800mW @ 32 ohm / 720mW @ 300 ohm / 360mW @ 600 ohm 6.35mm unbalanced jack: 1680mW @ 32 ohm / 180mW @ 300 ohm / 90mW @ 600 ohm |
| General | |
|---|---|
| Power supply | 230V AC (Fusible 1.6A) |
| Power consumption | < 25W Standby : 3W |
| Color | Silver |
| Dimensions | 239 x 50 x 208mm |
| Weight | 3kg |
| Package | 1x J.C Acoustics UDP-5 1x USB-A to USB-B cable 1x Power cable |
| Input | USB |
| Input | Optical |
| Input | SPDIF |
| Input | I2S via HDMI |
| Output | RCA |
| Output | Jack 6.35mm |
| Output | XLR |
| Output | Jack 4.4mm |
| DAC / ADC Chip | ES9039Q2M |
| Max sampling rate | DSD512 |
| Max sampling rate | 768kHz |
| Color | Silver |
| Class | Class A / AB |
| Networking | No |
| Remote Control | No |
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