EQUIP by André-C.A. — Mod.004 High-Frequency Unit

A closer look.

A different face of high frequency

The panel tells the story immediately: EQUIP by André-C.A., Mod.004, a central control, a red indicator and a separate rocker switch. The black presentation case gives the set a compact outline, while the push-button handpiece introduces another tactile detail. The pictured coloured electrode adds a distinct note to the glass selection.

It is a lovely configuration to keep beside the more traditional cabinets. Here the fascination lies in a cleaner panel and a different balance between control, indicator and handpiece. The essential appeal is still there: an electrical instrument presented as a complete, portable object.

Keep the model with its own photograph

The earlier source page identifies this unit as Mod.004 and discusses its compact format, controls, electrodes and restoration. We preserve that full account below. The visible EQUIP by André-C.A. and Mod.004 markings are the reference points for this page; the photograph remains attached to this specific presentation.

Details like these matter in a collection. A model marking, a switch layout or a handpiece can change how an instrument should be recognised. Giving this configuration its own historical page lets those features stay visible and makes comparison more rewarding.

A compact chapter in the ARC hive

Enquire about the Mod.004, share a matching panel or handpiece detail, or discuss the restoration of a comparable instrument. This page keeps the original pictured presentation and the earlier Forgotten Frequencies description together.

Original Forgotten Frequencies description · captured 1 November 2026

The following is the original description of the illustrated example from our earlier Forgotten Frequencies page, preserved exactly as captured. Its restoration and electrical-character statements belong to that historical account.

ANDRÉ / C.A. HIGH-FREQUENCY UNIT – MOD. 004 French 1970s Design • Transitional Violet Ray System • Compact Professional Format Manufacturer: André / C.A. Origin: France Era: 1970s Model: Mod. 004 Configuration: Compact professional high-frequency unit Controls: Central intensity regulation dial Dedicated power switch Visual power indicator Electrodes: Clear glass electrode set Coloured glass electrode included Handle: Integrated push-button handpiece Case: Original fitted presentation case Condition: Fully restored and fully operational

ANDRÉ / C.A. HIGH-FREQUENCY UNIT – MOD. 004 ​ Overview This André / C.A. Mod. 004 represents a fascinating French transitional design, bridging classic violet ray architecture with the cleaner, more regulated aesthetic of the 1970s. It’s compact, deliberate, and unapologetically functional — built at a time when high-frequency technology was being refined rather than reinvented. Design Character Unlike ornate early clinical units, this system leans into: Minimalist panel layout Clear visual feedback Direct, user-friendly operation The typography, indicator lamp, and control geometry are unmistakably 1970s French — restrained, confident, and practical. Output & Behaviour The output character is: Clean and well-regulated Easy to control across the full intensity range Stable at both low and mid settings Responsive to electrode changes It delivers a measured electrical field, avoiding the harshness sometimes found in earlier over-driven designs. Electrode Set The included electrode selection covers a versatile working range: Mushroom electrode Curved anatomical electrode Point and probe styles Clear glass for visible discharge Coloured glass electrode for altered plasma characteristics The coloured electrode adds a distinct visual and energetic contrast, making this set especially appealing to users who appreciate output nuance. Electrical Architecture Internally, the unit follows classic high-frequency principles: High voltage Extremely low current Rapid oscillation Dielectric glass coupling The visible glow remains a byproduct — the function lies in controlled field interaction. Restoration The unit has been fully electrically restored, including replacement of all capacitors as standard, with original circuit behaviour preserved and output tested under load. It operates exactly as intended — stable, predictable, and confident. Case & Presentation The original case presents cleanly, with: Secure electrode mounting Integrated cable management Compact, transportable format It feels purposeful rather than decorative — a working instrument first. Final Word This André / C.A. Mod. 004 is: Distinctly French Historically interesting Fully restored Easy to live with and use A sharp, well-designed high-frequency unit from a period where refinement mattered — and one that fits perfectly within a serious violet ray collection ⚡

Enquire about this model, its history or a restoration project.