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The "B", like Citation A, is totally new in design, construction and performance.
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• • It has the widest frequency response of any basic amplifier on the market - 1 to 100.000cps!
• • It is the only basic amplifier capable of delivering 15 to 50.000 cps at full power with both channels operating simultaneously.
• • It has the best square wave response - a phenomenal rise time of less than one microsecond!
• • It has the highest damping factor - 50 to 1 even below 10 cycles. (No other power amplifier is close.) High damping factor guarantees optimum speaker performance.
• • It is the only basic amplifier completely free of hangover or clipping at full power output.

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The Citation B utilizes the highest grade of components to insure long life, it uses computer-grade silicon transistors - more rugged than conventional silicon or germanium types - which will take 100% more power than their use in the Citation B will demand.

The "B" is divided into five sub-assemblies to assure easy accessibility and minimum operating temperatures through efficient heat dissipation. A laced military wiring harness couples each stage.

Unlike other fine vacuum tube and solid state power amplifiers, the Citation B uses Class AB instead of conventional, easier-to-design Class B operation. This eliminates the major defect common to Class B operated basics - annoying switching transients, a form of distortion manifested as shrillness at high frequencies.

Citation B reflects Harman-Kardon's solid state leadership in every way. Its sound is totally transparent and spacious. "A straight wire with gain" when matched with Citation A - the "B" will enhance the performance of any other quality preamplifier.
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• • Widest frequency response of any basic amplifier available today to reduce phase shift and transient distortion to negligible levels.
• • Unsurpassed transient response. For the first time percussion and brass are reproduced with clean, sharply defined, open sound.
• • Removal of all output and driver transformers eliminates phase shift and ringing. • Computer engineering - utilizing sub-assembly chassis construction techniques and laced military wiring harness for precision, easy accessibility, fast and simple kit-building.
• • Unsurpassed damping factor of 50-1 at 10 cps to provide maximum speaker "braking" over the entire audible range.
• • Computer-grade silicon transistors are practically impervious to abuse. Rated 100% over their normal requirements in the circuit - they are capable of handling power surges far beyond the limits of conventional transistors. This assures ultra-sonic response and 80-watt output with virtually unmeasurable distortion.
• • Massive electrolytic capacitors engineered to computer-grade specifications for unlimited shelf-life and consistent, long-term performance uniformity.
• • No loss of performance standards due to aging.
• • Automatically stabilized against extreme heat variations from 0° to 160° F.
• • Operated Class AB to eliminate switching transients (distortion manifested as shrillness at high frequencies.)
• • Transistors and associated circuitry mounted on unbreakable, military-grade epoxy glass boards for maximum rigidity and circuit stability. For easy accessibility, each board pivots from chassis.
• • Heavy duty finned aluminum "heat sinks" assure cool operating temperatures by rapidly drawing heat away from output transistors.
• • Fail-safe even under direct shorting conditions - assured by two special B+ fuses for each channel, plus the use of silicon transistors capable of taking 100% overload without damage.
• • Handsomely designed front panel facilitates custom installation. Includes a current-adjustment meter, on/off switch with pilot light, ano low-cut filter. Removable bottom front panel conceals idling adjustment controls.

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Output Circuit: Heavy duty single diffused silicon transistors operated
Class AB in totem-pole circuit configuration.

Continuous Power Output: 40 watts per channel (RMS) , both channels operating simultaneously.

Peak Power Output: 120 watts per channel with 8 ohm load. Harmonic Distortion: 0.5% 20-20,000 cycles per second at rated output.(8 ohm load.) Intermodulation Distortion: 0.5% at rated power output. Below 0.1% at normal listening level. (8 ohm load.) Frequency

Response: 15-60,000 cycles per-second at rated power output, both channels operating simultaneously. ±ldb 1-100,000cps at nominal 1 watt level. Square Wave Response: Less than 1 microsecond rise time. Input Sensitivity: 1.6 volts for rated output. Hum and Noise: Better than 90db.

Damping Factor: 50-1 at all frequencies down to 10 cycles per second. Power Supply: Excellent B+ regulation through use of computer-grade electrolytics and hermetically sealed industrial grade silicon diodes.

Inputs: One for each channel. Output Impedance: 4 to 16 ohms.
Convenience Outlet: One on rear panel, switched. Fuses: One A.C. primary. One in each channel B+ line.
Front Panel Controls: Idling current adjustment for each output transistor - meter monitored. A.C. on /off switch, low cut filter, meter selector switch.

Power Consumption: 90 watts. - Number of Transistors: 14
Dimensions: 14" wide x 5" high x 14" deep.
Finish: Brown and gold. - Shipping Weight: 33 lbs.
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harman kardon 1964
A subsidiary of THE JERROLD CORPORATION in PLAINVIEW, NEW YORK
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