Hi-Fi Sound Quality

The EF2C is meticulously designed for the most discriminating music listeners who demand the best performance and value. The EF2C is the perfect match for most PC driven audiophile headphones.


Sublime and Organic Tone

Combines the beautiful, warm sound signature of vacuum tubes with the advantages of low distortion and high S/N rate from a solid state amplifier. The hybrid design employs two 6J1 tubes for it's input stage and incorporates the OPA2604 along with discrete components for its output.



Input Impedance: 47k Ohms
​Output Impedance:
32 - 300 Ohms
Max Power Output:
600mW@35 Ohms
Line-in Max. Output:
4.6V Distortion: 2%
USB DAC Max. Output: 3.2V Distortion: 0.46%
Frequency Response: 20Hz - 20kHz
S/N: 90dB
Power Supply: 110v/220v
Dimensions: 144mm W x 110mm D x 78mm H
3lbs (1.36kg)

Modern Sounds

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Modern Sounds is a division of Signature Audio Video located in Ottawa, Ontario.