Fisher X 100 (1962–1964)
A tube-powered integrated amplifier from the early 1960s, known for its use with efficient speakers and restoration potential.
Overview
The Fisher X-100 is an integrated tube amplifier produced in the early 1960s, recognized under various naming conventions including "Fisher Model X100" and "X-100-3." Marketed as a "Stereophonic Amplifier" and "Stereo Master Control Amplifier," it was designed for high-fidelity audio systems of the era. The unit powers classic loudspeakers such as the Rogers JR149 and has gained attention among audiophiles and restorers for its sound quality when paired with efficient speakers. While documentation is sparse, surviving units have been restored and used in modern vintage setups.
Specifications
| Power output | 17 watts per channel into 8Ω (stereo) |
| Total Harmonic Distortion | 0.5% |
| Output tubes | Quad of EL84 output tubes (varies by model; X-100-B uses 7868 tubes) |
| Front-end tubes | 12AX7 front-end tubes |
| Output (line) | 220mV (line) |
| Weight | 10 kg / 22.026 lb |
| Production years | 1962–1964 (sources vary: 1963–1964 also cited) |
| Original price | 980.00 DM (X-100-C model was ~$369.00) |
Market
One unit sold for €2,690 in 2021, reflecting its collectible status among tube amplifier enthusiasts. Restoration costs can be significant, with a full tube set replacement priced at €269.41. Some units have been acquired for as little as $20 at yard sales, with owners investing further in repairs to achieve good sound performance. Service manuals and operating instructions are available, aiding in maintenance and troubleshooting.
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