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- Drive your electrostatics with one of the best energizers in the business. Compatible with all the great electrostatic headphone brands - including Orpheus and Koss.
- The 'Perfectly Matched' headphone experience.
- Both classic and cutting edge technology in 3 quality components delivers a perfectly matched listening experience - one-off Pinstripe Permalloy Core Transformer, a Bias Voltage Generator and the Capacitive Battery Power Supply.
- Making a transformer with the wide bandwidth and low distortion needed in the iESL is very challenging. To attain this, the custom transformers use complicated hand-wound, multi-section windings with both vertical and horizontal sectioning.
- They exceed the standards set by Siemens (Germany) and Peerless (USA). With a bandwidth of < 5Hz to > 60kHz (-3dB), transformers in the iESL far exceed the requirements of even the JAS High-Res Logo.
- 'The Capacitive Battery Power Supply: The battery is charged up to the required voltage and then the charger circuit is turned off completely, leaving the capacitor bank to ‘float’ at the required bias voltage.
- An essentially perfect bias voltage source with no electronic noise whatsoever at any frequency as the headphones are in essence, powered by the battery bank and not the mains!
- These 1,000Volt rated capacitors are from Germany. The key is the very high insulation resistance and minimal current leakage, as any such leakage causes self-discharge.
- The whole capacitor pack has around 35,000,000 kilo Ohm insulation resistance, which means that self-discharge time (to 30%) is around 100,000 seconds or 27 hours. So one is always listening on battery (not mains) power.
- Vishay MELF resistors - complex, costly BUT superior. These resistors provide optimal power rating and pulse load capability. Nothing else comes close.
- Good news for your flagship dynamic headphones: The iESL has an ear-tingling transformer coupled-stage that is not found in other energizers. And its audio performance is unsurpassed. So each and every flagship dynamic headphone when used through the iESL enjoys a whole new level of smoothness and airiness.
