Released in 1997, the NAD 613 is historically significant as the final and last cassette deck ever produced by NAD Electronics, as the audio industry transitioned fully into the digital compact disc era. It was designed as an affordable, high-performance two-head machine aimed at purists who wanted analog capability late in the cassette lifecycle.
 
Key Features and Design
Configuration: Two-head, single-capstan mechanism utilizing a DC servo motor.
Noise Reduction: Equipped with Dolby B and C noise reduction alongside Dolby HX Pro headroom extension.
Fine-Tuning Controls: Included user-adjustable bias fine-tuning for optimizing recordings on various tape formulations (Type I, CrO2, and Metal) and a playback "Play Trim" control to subtly adjust high frequencies on pre-recorded or older tapes.
Integration: Featured NAD-Link remote capabilities to daisy-chain and control operations alongside matching vintage NAD receiver and amplifier components.
 
Legacy and Reception
While not an expensive three-head audiophile leviathan, enthusiasts on forums like Tapeheads regard the NAD 613 as a well-engineered swan song for analog tape. It utilized quality late-era surface-mount and discrete component layouts. Today, it occupies a nostalgic niche as a capable, minimalist vintage deck for cassette collectors.