Massive Metal Foil

Solid metal foil means: A real metal foil forms the electrode — not a wafer-thin coating. This provides very high, uniform conductivity along the coil, reduces field gradients and enables high current carrying capacity. The higher film weight reduces field force-related vibrations and the electrode remains stable even under impulse load. This creates a robust basis for demanding applications that transfers energy directly and in a load-stable manner — without “flickering” on the electrode side.

Tonal effects

• More pressure and control in the bass/root tone, with clearer contours instead of buzzing
• Superior at level peaks: less compression, more headroom and punch without harshness
• Cleaner transients and more stable dynamics, even with fast pulse trains
• Quieter, more ordered sound: less flicker/internal discolouration, better audibility in complex passages

Air coils

Air coils are the uncompromising reference: maximally linear, without distortions caused by the core. They deliver maximum impulse fidelity and particularly natural, open playback. If space and a sufficiently low DC resistance are possible, air is the first choice.

OFC Copper

• Purity: at least 99.995% Cu, often 99.999% (4N) or higher
• Feature: almost oxygen-free (typically <10 ppm)
• Result: more stable grain boundaries, less oxide formation, more uniform electron flow

Manila Hemp Paper

Tight, controlled winding structures are a key requirement for reducing macro-microphonic effects in the electrolytic capacitor. The high-quality Manila hemp paper does more than just electrically separate the films: It acts as a damping separator in the wrap. Its fiber-elastic structure reduces vibrational energy and shock impulses instead of being felt as “pumps” in the supply. Forces from current pulses and mechanical stimuli are distributed more evenly so that the coil remains smoother. The result is a more stable energy output — particularly under load and with dynamic music.

Acoustic effects

• quieter background with high dynamics
• more control in bass during peak loads
• Fewer “pumps” of the supply under pulse load
• more stable overall impression at higher levels

Baked Varnish Wire/ Resin Soaking

Baked varnish wire is enamel-insulated wire with an additional, activatable hot-melt outer layer, which has an adhesive effect when heated. The windings are thus fixed together.

Impact in practice

• The coil becomes mechanically stable and „works“ significantly less
• Micro-movements between windings are reduced
• In particular, this reduces macro-microphonic effects (the windings „work“ less) and increases “silence” during operation

Resin soaking as an alternative to baked varnish wire

If no baked lacquer wire is used, resin soaking carried out under vacuum can take over the mechanical fixing. The resin penetrates into the wrap, reduces cavities and degrees of freedom of movement and transforms the wrap into a stable compound. The result: significantly less macro microphones and an overall quieter, more precise operation of the coil.