The Z&H Designs Hopto Stereo Optical Compressor is a modern, all-discrete, fully transistorised design inspired by the classic LA-2A and LA-3A. It delivers the smooth, transparent optical compression that has long been cherished on vocals, while adding new features to meet the demands of contemporary production. Designed to excel both in tracking and mixing, Z&H Designs Hopto brings the natural levelling qualities of an optical compressor into a broader range of applications, making it ideal for use across vocals, guitars, drums, bass, and full mixes.
Unlike traditional optical compressors, which are often too slow to control sharp transients, Z&H Designs Hopto introduces a fast attack mode that can effectively tame the front edge of guitars, cymbals, and vocal sibilance without compromising sound quality. This fast/slow attack switch gives engineers the flexibility to choose between the gentle, classic opto response or a modern, precise transient handler. A sidechain high-pass filter further enhances versatility, preventing low frequencies from triggering compression unnecessarily, with options at Flat, 100Hz, and 200Hz.
Each channel of Z&H Designs Hopto features stepped make-up gain controls for recall accuracy, compression ratios of 3:1, 5:1, and 10:1, and independent channel bypass switches. It can be operated in dual-mono mode or linked stereo mode, where compression follows the more heavily driven channel. The inclusion of four legendary 990 discrete op-amps, paired with high-quality 123 transformers, ensures a pure, transparent, and deep sound character that can be tailored from subtle levelling to bold dynamics control.
The unit is powered by a high-voltage ±24V linear supply, chosen for its reliability, noise-free performance, and smooth, warm response. Its robust dual-layer panel, high-quality meters, and stepped controls reflect boutique-grade craftsmanship, with every unit tested and signed off by real mixing engineers. Z&H Designs Hopto embodies Z&H Designs’ “Zen” sonic philosophy, focusing on clean, natural, and musical results that are nourishing to the ear. With its unique combination of classic optical compression and modern innovations, Z&H Designs Hopto is a versatile and powerful compressor that suits both vintage-inspired and modern productions alike.
Features
- All-discrete analogue circuit based on LA-2A/3A design
- Four legendary 990 discrete op-amps with 123 transformers
- Transparent, natural, and musical optical compression
- Fast/slow attack switch for classic or modern transient control
- Compression ratios of 3:1, 5:1, and 10:1
- Sidechain high-pass filter with Flat, 100Hz, and 200Hz settings
- Stepped make-up gain with 21 steps per channel for precise recall
- Mono or stereo link operation
- Independent channel bypass switches with illuminated VU meters
- ±24V high-voltage linear power supply for smooth, reliable performance
- Boutique build quality with dual-layer solid panel and metallic finish
- Handcrafted, tested, and signed off by mixing engineers
- Worldwide free shipping, 5-year warranty, and 14-day trial guarantee
