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Classi Elma A4, 24 positions audio attenuator, assembled 1.0 Watt 10k Thin-Film Audio Resistors 2 Channels

starting from 219,46 €
(184,42 € excl. vat)
including 19% VAT., plus shipping
  • Made to order
  • Shipping time: 15 - 16 workdays
Order Now
Please select
  • Input Impedance
  • Channels / Wafer

Item no.
  • A4-ME-AX-022
Product weight
  • 0,03 kg
Shipping weight
  • 0,04 kg


Professional Audio Attenuator switch with 24 positions, recommended to replace a potentiometer with a quality stepped attenuator.

The A4 is a individual customizable audio rotary switch which offers a huge range of rotary switches in series or ladder type attenuator configuration.

The High-End Elma rotary switch is developed with a PCB based switch contact system that is specifically designed to meet audiophile requirements for super sonic performance. All switches feature Elma´s hallmark indexing feel for outstanding tactile feedback and feel with a standard toeque of 2.5Ncm. Selectable end stop. Pre-Assembled with high-precision 1W low-noise thin-film resistors with input impedance options 10k, 20k, 50k and 100k Ohm. The series A4 attenuators are available up to 8 channels. The A4 switch can be assembled with resistors up to 3.6mm diameter for the ladder type switch. This rotary switch is also available as concentric version. We offer customized THT version with custom selected resistors - If you need any custom solution, please contact us.


  • Selector attenuator switches, series
  • Exceptional sonic clarity, smooth and precise switch feel
  • Low-bounce contacts with 3 micron gold plating
  • Motorized versions available (see Remote Audio PLUS)
  • Customized tapers
  • Concentric Version available
  • For high-end home audio, mixing console and Cinema

Torque standard
up to 2 Wafers 1,5Ncm
from 3-4 Wafers 2,5Ncm
from 4 Wafers 5Ncm
Please contact us, if you need individual torque values.

On the following pictures you can see a concentric design arrangement of the A4 switch. Please contact us if you are interested in a concentric version.
Elma A4 Concentric rotary switch

Elma A4 Concentric rotary switch 4 wafers front
Announced maximum resistor diameter for the A4 is: 0.7/3.6/10 mm

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* All prices are final prices in EUR including the 19% valid value added tax/VAT.