InnerSound ESL Electrostatic Stereo Power Amplifier (15220)
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| Condition | |
| Payment methods |       |
| Ships from | Broomfield , CO, 80020 |
| Ships to | Worldwide |
| Package dimensions | unspecified |
| Shipping carrier | FedEx |
| Shipping cost | $65.00 |
| Original accessories | Box, Manual |
 Average | Research Pricing |
Product: InnerSound ESL Electrostatic Stereo Power Amplifier
Product SKU: 15220
Serial Number: CEX30449
Voltage: 100V / 120V / 220V / 240V
Cosmetic Description: 8/10 Excellent condition with minimal visible cosmetic wear including a scuff mark and faint rub marks on the top cover, and a small scuff on the front faceplate to the left of the InnerSound logo. These blemishes are not readily visible and do not detract from the overall wonderful appearance.
What is Included: Amplifier, Manual, Power cable, Factory packaging (not original)
Functional Notes: Operational condition of this item is excellent, fully tested and no issues found.
Age: Unknown
# of Owners: 1
Tobacco Exposure: No
Service History: None
MSRP: $2995
Other Notes: "An amplifier must deliver more current as the impedance of the speaker decreases. This requires a larger power supply and output devices that can pass large amounts of current. Such parts are costly, so modestly-priced amplifiers are only designed to drive relatively high impedance loads -- like 8 ohm speakers. Better amps use superior parts and can handle 4 ohm loads.
But few of even the best amplifiers can handle the very low, 2 ohm impedance of an ESL well. Many otherwise fine amplifiers find themselves unable to pass sufficient current through their output stages to drive an ESL at high frequencies. This is known as "current clipping", and results in poor high frequency performance. Tube amplifiers are particularly bad in this regard due to their relatively high, 4 ohm output impedance.
The InnerSound Electrostatic Amplifier ("ESL amp") solves this problem by using a massive output stage. Each output transistor is capable of delivering 250 watts -- and there are eighteen of these per channel. As a result, it can deliver a staggering 135 amps of current with a combined power rating of 4,500 watts per channel! The output impedance of an amplifier must be lower than the impedance of the speaker, or current clipping will result. With so many output devices, the output impedance of the ESL amplifier is virtually zero. Current clipping simply is no longer an issue." - Roger Sanders, InnerSound
Reviews: Stereo Times
Shipping: Cost to ship this item within the contiguous United States is a flat rate of $65- including packaging and insurance. For all other locations including Hawaii, Puerto Rico and Alaska, please request a quote prior to purchase. Items with factory packaging will be double boxed. When factory packaging not available re-usable shipping box with custom injected-foam mold will be used. (for all items over 10 lbs). Note that all items valued over $500 will require a signature upon delivery.
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Return Policy
Return Window
Item can be returned within 30 days of receipt.
General Terms
Items must be returned in their original condition, with all included packing materials and no signs of use. Buyer assumes responsibility for all shipping return costs unless the item was not received as described.
Refunds
Buyer will receive a full refund in the original payment method less any shipping charges.
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Returns: Every pre-owned product we offer carries a 30-day, satisfaction-guaranteed return policy unless stated otherwise in the product description.** Additionally, every pre-owned product purchased directly at www.tmraudio.com carries a 90-day warranty. During the 30-day return period, a return or exchange can be requested for any reason. If the product is defective in some way, TMR will cover all related shipping costs. Any returns initiated outside of product defects, the customer is responsible for all Shipping and Handling costs, and there will be a 5% restocking fee taken from the refunded amount. All return requests, with exception of any special orders, must be approved and a return authorization issued before return will be accepted. Special orders are final and will not be available for any return or refund. Basic troubleshooting measures require the cooperation of the customer and are expected to be carried out before a product is deemed “defective." During the 90-day warranty period, we will repair (at our expense) any products that are found to be defective. If we can not repair it, we will replace it with something comparable or issue a full refund. In no case is a customer authorized to send a defective unit to a 3rd party repair center without our consent, and we will not pay for any repairs that we do not perform.
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