High-Temperature Glycol-based Electrolyte
In an audio power supply, it is not only how much energy is “in the tank” that counts, but above all how quickly, stably and cleanly this energy reaches where it is needed — directly at the amplifier stage. The electrolyte is not a side issue, but a central component of the capacitor: Together with aluminum foil and separator paper, it forms the medium for the electrode winding — with electrical and mechanical properties. Our high-temperature glycol-based electrolyte is therefore deliberately designed as a sound-relevant component. We not only use it in 105°C series, but sometimes also in selected 85°C types — not primarily because of the temperature class, but because of the higher conductivity, the higher ripple current capacity and the stabilization effects in the coil.
Electrotechnical properties
The high-temperature glycol electrolyte improves the electrical behavior of the capacitor where power supply capacitors actually work in audio mode: under load, during heating and during dynamic current pulses.
Higher conductivity in the winding medium
The electrolyte ensures faster and more uniform ion conduction in the capacitor. This lowers ESR and reduces supply drops in the event of load jumps.
Higher ripple current capacity
Lower losses and better thermal control increase the allowable AC load. This ensures more reserve in continuous operation and less self-heating with the same load.
More stable impedance behavior over temperature
The supply remains constant even when heated. The capacitor does not “tip over” into softer behavior, but keeps its electrical performance stable over the operating window.
Lower drift over the lifetime
The electrolyte is designed for stability. As a result, ESR, impedance and resilience remain more reproducible in the long term — a decisive factor for consistent performance over years.
Macro-microphonic effects
By macro microphony, we mean macroscopic internal relative movements under real current load, against which the wrap must be stabilized. This is precisely where the high-temperature glycol electrolyte acts as an active component in the wrapping medium.
Stabilization of the wrap from the inside
Through defined wetting and appropriate viscosity, the paper/electrolyte system becomes a supporting medium that holds the winding structure together during operation.
Reduced gross relative movements during current pulses
High pulse currents create forces within the winding. The electrolyte helps the winding structure to remain mechanically quieter and “work” less.
Fewer supply pumps under load
The internal winding stability reduces the probability that significant mechanical stimuli will change into measurable and audible modulations of the supply voltage.
Important: This effect relates to internal wrap stability. Decoupling from external vibrations (transformer hum, housing excitation) is also determined by assembly and mechanical measures.
Micro-microphonic effects
Micro-microphony affects the finest modulations in the capacitor — i.e. small, load and time-dependent changes in the winding medium , which can result in a “more unstable” supply or in subtle interference. The high-temperature glycol electrolyte improves the current flow at this level through a more homogeneous and stable winding medium.
Quieter current flow in the coil
Conductivity and impedance remain more uniform under dynamic load, instead of being modulated in a fine-level manner.
Reduced microscopic inhomogeneities
Uniform wetting and stable material properties ensure that local ion paths remain more consistent — particularly during rapid load changes.
Cleaner transient supply
Energy is stably available at the amplifier stage without fine sequelae or micromodulations. This supports precise, controlled and “clean” playback under a real music load.
Sound Character
In playback, the high-temperature glycol electrolyte does not appear as sound coloring, but in form of sovereignty: Impulses are more controlled, the dynamics remain stable, and the overall impression becomes calmer — especially with complex music and higher levels. The power supply appears “firmer”, less stressed and remains consistent even when heated and under continuous load.
Typical uses
- Power capacitors in transistor amplifiers (class A and AB), where load jumps and pulse currents are high
- Power supplies in Class D amplifiers as stable basic storage (in combination with rapid local support)
- Power supplies in signal-processing devices (streamers, DSP, mixing consoles), where parameter consistency and low modulation are crucial
- Series with a focus on long-term consistency, in which the stability of ESR/impedance and smooth winding over the operating period is a key quality feature
