Katie 88 Monoblock Single-Ended Power Amplifiers
Katie 88 Monoblock Single-Ended Power Amplifiers
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Katie 88 10W Monoblock Single-Ended Power Amplifiers
Class A circuitry
Point to point wired
12AX7 and KT88 tubes
Hashimoto Output Transformers
10W RMS Per Channel into 8 ohms
4 and 8 ohm Speaker Outputs
Frequency Response: (10Hz to 50KHz -1dB)
Mono configuration
Standby mode switch
Hand made in the USA
Note from the designer/builder:
"The Katie 88s were single-ended amps with an attitude. Punchy, dynamic, present and wide are words that come to mind to describe the sound of music played through these amps. Having two fully independent mono amplifiers is hard to beat for those who really enjoy the maximum spatial factor in their high fidelity stereo system."
Katie 88 Class A, Single-Ended Mono Power Amplifier
Katie 88 Class A, Single-Ended Mono Power Amplifier
The Katie 88, is an ultra high performance, wide-bandwidth single-ended Class A vacuum tube power amplifier in monoblock format. These amps were designed as a custom build with the goal of obtaining the highest possible performance from 2 vacuum tubes in a mono amplifier. The Hashimoto output transformers allow the amplifier to provide extended frequency response with only a moderate amount of feedback needed.
Technical Specifications
Maximum undistorted output: 10W RMS
Input sensitivity: 1.1V RMS (for full output)
Input impedance: 100K ohms
Frequency Response (1W into 8 ohms)
10Hz – 50KHz (-1dB)
5Hz-90KHz (-3dB)
Power Supply Design
High-power toroidal transformer
Direct current heater circuitry
Ultra-high capacitance energy storage
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