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 • ±2.5% Tolerance
 • Zero Saturation
 • Zero Skin Effect
 • No Microphonics

NEWCopper Foil Inductors
Perfect Quality with Zero Distortion

 
ERSE high quality copper foil coils are made of extremely tight windings of 99.99% pure copper foil and thin polypropylene film for insulation. The thin gauge of copper foil eliminates skin effect and improves sonic performance than any air core coil on the market today. Standard Values Now Available in Stock!

 
Attention OEM Customers:
ERSE offers custom winding to your specific value needed and also offers multi-tap Copper Foil Coils. Always custom wound to your manufacturing needs.
 
 

 

Our Loss Is Your Gain
Enjoy huge savings on select items at www.erseaudio.com's exclusive Sales and Special Offers store. Overstocked and Discontinued items sold at discounted prices up to 45% off the regularly sold price. Crossovers, Capacitors, Inductors, Accessories, and more.
 
While supplies last!

 
Items On Special This Month
Non-Polarized Electrolytic Capacitors 33.0µF - 100v - 6% D.F.
Non-Polarized Electrolytic Capacitors
20% Off
ERSE XQ Perfect Lay Air Core Coil XQ Coil - Perfect Lay Air Core Inductor
4.0mH 12ga
0.36Ω - 1000w
50% Off
IXQ Laminated Core Coil IXQ Laminated Core Coil
15.0mH 18ga
1.032Ω - 300w
35% Off
SPX Pro Speaker Box Pro SPx Polypropylene Speaker Box
15 and 12 inch
25% Off
And Much More!

 
 
 

USPS Shipping
 
ERSE now offers shipping for domestinc and international customers by the United States Post Office. Shipping costs are calculated for your order online along with price comparisons to UPS and FedEx.

 
 
 

Special Deals

Crossovers

Capacitors

Coils

Resistors

SPx Pro Speaker Boxes

Binding Posts

Speaker Handles

Terminal Cups

Protection Devices

L-Pads

PC Boards