JDS C5D is a high-performance portable headphone amplifier featuring digital volume control, multi-position bass boost, dual gain, and asynchronous digital-to-analog conversion compatible with iPod, iPhone, and all UAC1 compatible operating systems.
Perfect Channel Balance
Digital stepped attenuation with zero-crossing detection and 1dB attenuation steps provide smooth volume adjustment at all volume levels, even with sensitive IEMs.
Dual LDO Regulation
High performance audio starts with clean power. Supply rails are filtered by impressive TPS7A4700 and TPS7A3301 regulators to achieve ultra low supply noise at a constant output voltage of +/-7V.
Smart USB Charging
Powered by a large 1200mAh Li-Ion battery, JDS C5D quickly charges from any USB port (computer, tablet charger, cell phone charger, etc.). A single LED indicates battery status: solid green while on, blinking while battery is low, or blue while charging.
Configurable Sound
JDS C5D features dual gain levels and a multiple position bass boost toggle for highly customizable sound.
Low Jitter
JDS C5D’s asynchronous PCM5102A DAC operates with ultra low jitter, symmetrical pairs measuring below -112dB.
Low Output Impedance
JDS C5D’s extremely low output impedance of 0.62 ohms ensures natural frequency response with all headphones.
Specifications
Amplifier Performance
Frequency Response: +/- 0.1 dB (20Hz-20kHz)
THD+N (20-20kHz, 150Ω) 0.0015%
THD+N (20-20kHz, 32Ω) 0.0045%
Noise: -105 dBu
Crosstalk @ 150 Ω -67 dB
Inter-channel Phase @ 1kHz +/- 0.01°
Channel Balance +/- 0.55 dB, all volume positions
Max Output @ 600Ω: 4.146 VRMS
Max Output @ 150Ω: 3.580 VRMS
Max Output @ 32Ω: 1.182 VRMS
Power Supply: 14.0 Vpp
Output Impedance: 0.62 Ω
Battery Run Time: 7-12 Hours
Charge Time: 2-4 Hours
DAC Performance
Frequency Response: +/- 0.14 dB
THD+N 100Hz: 0.0014%
THD+N 20Hz: 0.0015%
THD+N 10kHz: 0.0025%
IMD CCIF 19/20 Khz: 0.0015%
Noise A-Weighted: -103 dBu
Dynamic Range: >109 dB A-Weighted
Linearity Error -90 dBFS 24/96: 0.2 dB
Crosstalk -10dBFS: -80 dB
Sum of Jitter Components @ 11025Hz: -112 dB
Maximum Output Line Out 100K: 2.0 VRMS
Features
Digital Stepped Attenuation:63 steps + mute
Dual Gain: 2.3x and 6.5x
Bass Boost: Off / Med / High
Low Battery Indication @ 20 Minutes
Thin Film Resistors: 0.1% Tolerance
Battery: 1200mAh, 3.7V Li-Ion
Data Support
Audio Formats: 16/44, 16/48, 16/88, 16/96, 24/44, 24/48, 24/96
Interface: USB, Audio Class 1
Native Driver OS Support: Windows XP & Later, OS X x86, Linux, iOS 7
DAC Compatibility
iPhone: YES – Requires CCK + iOS7
iPad: YES – Requires CCK
Windows: YES
Linux: YES
Android: Some – Requires OTG Cable + UAC1
OS X: YES
Connectivity
Analog Input: 3.5mm
Digital Input: USB
Output: 3.5mm
Charging: USB
Dimension
Case Dimensions (mm): 99.5 x 61.5 x 14.0
Weight: 119.07 gr. (4.2oz)
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