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ES Lab ES-HE90 Headphones (Pre-Order Deposit)
$200.00
The total price will be $6,000.
$200 refundable pre-order deposit today; $5,800 remaining balance.
The $5,800 balance is due when your headphones are ready to ship. We will try to notify you well in advance.
PRE-ORDER — Not in stock.
ES Lab estimates first-batch shipping in January 2027. This is a manufacturer estimate, not a guaranteed delivery date. HeadAmp allocation and your order's shipping date are subject to confirmation.
$200 refundable pre-order deposit today; $5,800 remaining balance.
The $5,800 balance is due when your headphones are ready to ship. We will try to notify you well in advance.
PRE-ORDER — Not in stock.
ES Lab estimates first-batch shipping in January 2027. This is a manufacturer estimate, not a guaranteed delivery date. HeadAmp allocation and your order's shipping date are subject to confirmation.
ES Lab ES-HE90 is an open-back electrostatic headphone inspired by the Sennheiser HE90, with glass electrodes, a 1-micron diaphragm and bubinga wood housings.
- Total price: $6,000. Reserve with a $200 refundable deposit; $5,800 remains to be paid. Includes an extra set of alternate-tuning earpads.
- Electrostatic drivers with precision-machined glass electrodes.
- Replaceable cable, headband and earpads; wooden storage case included.
- Requires a compatible electrostatic amplifier with a 5-pin Stax-type Pro Bias connection.
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Pre-order information
Your $200 refundable deposit goes toward the $6,000 total price. The remaining $5,800 is due when your headphones are ready to ship. We will try to notify you well in advance.
We will email an invoice for the balance. You can pay using our online payment methods, or by bank transfer or check for a small discount. Contact us for details about the bank transfer or check discount.
Estimated shipping
ES Lab currently expects its first production batch to ship in January 2027. Later batches may ship later. Contact us to confirm the current allocation and estimated timing before ordering if you need delivery by a particular date.
Pre-order bonus
Pre-orders include an additional set of earpads with alternate tuning. The total headphone price is $6,000. Your $200 refundable deposit is credited toward that total, leaving a $5,800 balance.
This is a pre-order, not an in-stock item. Production and shipping estimates can change. An amplifier is not included.
Glass electrodes and a 1-micron diaphragm
The ES-HE90 uses high-strength glass electrodes made with laser cutting and chemical etching. A chromium conducting layer and gold coating form part of the electrode structure. The elliptical diaphragm is made from 1-micron engineering plastic, and the drivers are assembled in a cleanroom.
This is ES Lab's own headphone, developed as a tribute to the original HE90. It is not a Sennheiser product.
Wood housings and replaceable parts
The housings are made from African bubinga wood, with a sanded, coated and polished finish. The cable, headband and earpads can be replaced by hand. The hand-assembled earpads use polyurethane foam, and the alternate pads provide another tuning option.
Two earpad tuning options
The pre-order includes an extra set of alternate-tuning earpads. ES Lab describes the different pad combinations as offering a choice between a tuning closer to the original HE90 sound and one optimized for modern recordings.
The pads use polyurethane foam selected for its density, firmness and breathability. They are hand-assembled in ES Lab’s workshop and can be replaced by hand.
Amplifier requirements
An electrostatic amplifier is required. The ES-HE90 uses a 5-pin Stax-type Pro Bias connector and a specified bias range of 500–580 V DC. It cannot connect directly to a standard headphone jack or conventional headphone amplifier. Ask us if you need help checking your amplifier.
Recommended electrostatic amplifiers
We recommend the HeadAmp Blue Hawaii SE, HeadAmp Grand Cayman (Pre-Order Deposit), and STAX SRM-T8000 for the ES-HE90. Amplifiers are sold separately.
Technical specifications
| Transducer | Electrostatic |
|---|---|
| Acoustic design | Open-back |
| Frequency response | 20 Hz–41 kHz |
| Sensitivity | 100 dB / 100 V r.m.s. |
| Bias voltage | 500–580 V DC |
| Termination | 5-pin Stax-type Pro Bias |
| Cable length | 2.3 m |
| Weight | 370 g without cable |
| Operating temperature | 0–35 °C |
| Operating humidity | 0–90% |
| Manufacturer warranty | 1 year |
What's included
- ES Lab ES-HE90 headphones with cable and fitted earpads
- Wooden storage case
- Additional alternate-tuning earpads with pre-orders
Official ES Lab illustrations
These pages from ES Lab’s brochure show the construction, earpads and individual components.
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