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ATR Service Precision

NAB Hub Hold-Downs Are Back!

After several years of unavailability, our original NAB Hub Hold-Downs return to production with a reengineered design, substantial construction, and our unique three-plunger reel centering system.

New Production — Available Now

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Professional Ampex ATR-100 Series Restoration, Remanufacturing & Performance Upgrades

ATR Service specializes in the comprehensive restoration and remanufacturing of professional Ampex ATR-100 Series tape recorders, combining original Ampex engineering with modern components, proprietary upgrades, and precision calibration.

Our work extends beyond restoring original factory performance, with technical improvements designed to enhance recording and playback accuracy, reliability, and long-term operation.

Ultra-Low Distortion: THD ≈ 0.004% with upgraded I/O modules (original ≈ 0.02%)
Precision Transport Performance: Wow & Flutter ≈ 0.0014% RMS (NAB, unweighted, 15 ips) with precision rubber-coated tacho wheel (original specification ≈ 0.04%)

Serving professional recording and mastering studios, archives, and dedicated analog audio enthusiasts worldwide.

Explore Our Upgrades & Modules