JDS Labs C421 (C421 v1.01) Headphone Amplifier

Product Features:

• Desktop Headphone Amplifier
• Signal is transferred through 0.1% thin film resistors for transparency and minimal distortion
• Power circuit provides continuous voltage boosting so the music stays strong until battery depleted
• Low battery indication announced during last 45 minutes of battery use
• Stylish brushed aluminum housing
• New active-true ground topology enables fail-safe charging while giving benefits of an active ground circuit
• Implemented on a 4-layer PCB that has dual internal ground planes to provide maximum signal integrity
• USB powered smart charging

Technical Specifications:

• Dual Gain: 2.3x or 7.0x (+7.2dB or +16.9dB)
• Bass Boost: +8dB peak
• Battery: 1200mAh, 3.7V Li-Ion battery
• 3.5mm input and output jacks, gold plated
• Run-Time: 11 hours (approx.)
• Charge Time: 5 hours
• Frequency Response: 20-20,000 Hz
• SNR: > 110 dB
• THD: < 0.0041%
• Crosstalk: < -57dB
• Output Impedance: 0.1 ohm
• Volume Potentiometer Taper: 3B
• Primary stage opamp: OPA2227
• Dimensions: 2.46"W x 0.55"D x 3.83"H
• Authorized Internet Dealer
• 1-year Manufacturer's Warranty