Unika CHA1
The CHA1 is a classic-grade headphone amplifier carefully developed by UNiKA and manufactured in the UNiKA factory in Taiwan. The application object of CHA1 is headphone enthusiasts, audiophiles and multi-media and streaming usersorlive concert soundman.
CHA1 is suitable for general consumer headphone and earbud, as well as referencegrade and low-sensitivity high-end headphones. Impedances from 15ohm to 600ohm are easily driven and produce a very smooth and very dynamic sound. Moreover, it performs very high S/N ratio and cannot be perceived power supply and circuit characteristic noise.
Circuit principle: OTL / External power supply / Stereo amplifier
Frequency response: 20Hz ~ 20KHz, ±0.2dB ( Limited by APx525’s B.W. )
THD+N @ 10mW: 0.0008%, 470 ~ 600Ω@XRL, 1KHz@20KHz B.W.
Dynamic range@: 113.5dB @220Ω load, XLR input
Input connector (Corresponding to 3 selection buttons)
• I: A pair of NEUTRIK® Combi jack
• II: A pair of RCA
• III: mini TRS phone jack
Output connector (Cannot output at the same time):
• 6.3mm TRS phone jack
• 3.5mm mini TRS phone jack
Maxinum output power: 300mW
Single end input inpedance: 90KΩ
Balance input inpedance: >14.7KΩ
mini TRS phone gain: 22.4dB
RCA gain: 11dB
XLR gain: 2.6dB
Output loading impedance: 15Ω ~ 600Ω
Power concumption: 6W/0.25A
Power supply & consumption: 24VDC / 10W
Ext. AC to DC adaptor: 90 ~ 264VAC input / 24VDC output
Type of AC plugs: includes UK / US / AU / EU
Dimension (W x D x H): 162 x 104 x 53 mm
Shipping dimension (W x D x H): 306 x 163 x 70 mm
Nett weight: 0.73kg
Shipping weight @ per unit: 1.10kg ( w/carton & adaptor )
