Crown ES224 (1975)
A high-power solid-state stereo amplifier introduced in 1975, notable for its robust output and wide frequency response.
Overview
The Crown ES224 is a high-power solid-state stereo amplifier released in 1975. Representing a significant milestone in Crown's audio engineering, it delivers 225 watts per channel with a frequency response of 20Hz to 20kHz (+0, -1 dB). Designed for demanding audio applications, the ES224 features an input sensitivity of 1.4 volts for full output and an input impedance of 20kΩ. Despite limited documentation, it has maintained a presence among vintage audio enthusiasts.
Specifications
| Power Output | 225W per channel |
| Frequency Response | 20Hz – 20kHz (+0, -1 dB) |
| Input Sensitivity | 1.4 V for full output |
| Input Impedance | 20kΩ |
| Dimensions | 19" (width) x 7.5" (height) x 18" |
Design
The Crown ES224 is a high-power solid-state stereo amplifier. While specific circuit topology details are sparse, it was engineered for reliability and high output, consistent with Crown's professional audio focus during the 1970s.
Context
Introduced in 1975, the ES224 represented a significant milestone in Crown's amplifier development, targeting both professional and high-fidelity consumer markets with its substantial power output and precise audio reproduction.
Market
The ES224 is described as rare, with surviving units still in use decades after production. Owner testimonials indicate long-term durability, with some reporting continued visual and sonic performance after 30 years.
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