Tisbury Audio Challenge Amp 1 Instruction Manual

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Tisbury Audio!

Challenge Amp 1!

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Reference Headphone Amplifier!

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Instruction Manual"

CA-1 Instruction Manual, Rev. A! ! Copyright © 2014 Tisbury Audio

Index!

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3! In the Box!

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3! Overview!

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4! Diagram!

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5! Usage Instructions!

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6! Warranty!

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7! Technical Specifications"

CA-1 Instruction Manual - Page 2

In the Box!

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1 x Challenge Amp 1 Headphone Amplifier!

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1 x 12 V AC Power Supply (plus international adaptor if required).!

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Overview!

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The Challenge Amp 1 is a reference class headphone amplifier,
designed to deliver true and reliable transparency into virtually all
headphones.!

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Features!

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• Two gain settings: 6 dB (2x), 16 dB (6.3x)!

• High output power: 1 W into 50 ohms!

• Ultra low distortion: 0.0003% THD (1 kHz, +6 dBu into 32 ohms)!

• Low noise floor: -110 dBV, 128 dB dynamic range (A-weighted)!

• Flat frequency response: -0.04 dB from 20 Hz to 20 kHz!

• Top quality components: Alps "Blue Velvet" volume, Neutrik jack,
Panasonic caps and Susumi 0.1% thin film resistors!

• Muting relay for silent operation!

• Compact footprint (W 204mm x D 170mm x H 74mm)!

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CA-1 Instruction Manual - Page 3