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- MASS-Kobo Model 485
MASS-Kobo Model 485
Balanced Headphone Amplifier
- Successor to the Model 394 series, the new Model 485 features an updated design with a 4.4mm balanced output, now the industry standard.
- Balanced XLR inputs support +4dBm/-10dBm, while unbalanced RCA inputs follow the -10dBm standard.
- Includes an output switch for “Low” (normal-efficiency headphones) and “Hi” (low-efficiency headphones like planars).
- Equipped with custom conductive plastic faders by Tokyo KO-ON Denpa, typically used in high-end pro audio mixers.
- It features a high performing, 4 channel TDK potentiometer.
VAT Included for UK Customers.
For international customers, VAT is already removed from the displayed price. International Customers will incur local import taxes and duty charges.
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MASS-Kobo Model 485

Made in JAPAN - Built to Order
Successor to the popular Model 394 series; which was discontinued due to the discontinuation of some parts by their manufacturers, the Model 485 will see its design updated to include a 4.4mm balanced output, which has become the standard in recent years.

Technical Details
General
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Balanced input/output stereo headphone amplifier
Inputs & Outputs
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XLR3-31 equivalent x 2 (electronically balanced), RCA x 2 (unbalanced)
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4.4mm Pentaconn, XLR4-31 (balanced stereo), XLR3-31 (L/R balanced)
Input Specifications
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3.7kΩ (XLR), 12kΩ (RCA)
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+4dBm / -10dBm (XLR), -10dBm (RCA)
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+25dBm (XLR), +10dBm (RCA)
Output Specifications
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Unbalanced: Hi 12V / Low 9V
Balanced: Hi 24V / Low 18V
(32Ω load, 1kHz, THD+N 0.05%) -
Unbalanced: Hi 4.2V / Low 3V
Balanced: Hi 8.5V / Low 6V
(32Ω load, 1kHz, THD+N 0.05%) -
Balanced: 2.2W+2.2W
Unbalanced: 600mW+600mW
(32Ω load, 1kHz, THD+N 0.05%)
Power & Physical
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AC 100V–240V, 50Hz/60Hz
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0.5A (at AC100V)
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Without feet: 285 x 230 x 50mm
With feet: 285 x 258 x 52mm -
2.9kg (main unit only)