Endler Audio: Stepped Attenuators, Behringer 2496 Mods, Speaker Cables and Interconnects, Speakers

Behringer 2496 direct out mods
Stepped Attenuators
Custom Cables
Audio System Description
Recommended Equipment
Contact Information
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How do I purchase....
Email your order or use the add to cart buttons
How much is shipping? The shipping costs will be a flat $7.50 for all continental US orders under 5 pounds. This will cover most orders with the exception of large items such as speakers and cabinets which will have the shipping calculated after purchase. 
6/23/05     Cheaper overseas shipping. USPS offers better pricing on overseas shipping. Most countries will be $37.50 US for two attenuators. Charges will be based on the actual cost according to the calculator. Follow the link and enter your country then enter 1 pound for two attenuators or 2 pounds for six attenuators. See the price for "Global Express Mail" as this service includes tracking.
http://ircalc.usps.gov/  The $7.50 initial fee will cover the extra overseas paperwork with the balance to be determined by the shipping calculator.
What payment methods do you accept....
Paypal credits instantly, personal checks usually only take 1 day to clear after I deposit them on Thursdays.
May I return merchandise if it doesn't work out...
Yes, just ship it back for a full refund less the shipping.
Are your products guaranteed...
Yes I will guarantee all my products for life. Just ship them back so I may repair or replace them.
Should I use 4K or 20K....
I ran listening tests with 1k (1000) ohms, 2k, 4k, and 20k. 1k was too low, noticeably loading down the source and thickening the sound. 2k was a little better when driving interconnects but 4k was nearly as good in this regard and was more effortless than the 2k attenuator (and the multi-tapped transformer volume control) when plugged directly into the amp. 20k is an easier load for your source and can be used with amps that have 100k or higher input impedence.
Are 4db steps fine enough....
I have used a 24 step 2db attenuator for years and find the change to 4db steps to be not a problem as I used to end up changing volume settings 2-3 steps at a time anyways. 4db is not as coarse as you might think as I still quite often change 2 steps at a time.
Why not just use potentiometers....
Resistors sound better thant pots and and offer repeatable settings, allowing multiple channels to remain closely matched at different volume levels.
Why do passive volume controls benefit from short / no cables....
Passive resistive volume controls have to walk a fine line between an impedance which is too low on the input side and too high on the output side.To reduce the output impedance I have chosen the lowest practical series resistor of 4000 ohms. This value results in input impedances in the range of 4600 to 10k for the most commonly used settings which are easy enough for modern source components to drive yet offers the lowest feasible output impedance to minimize interactions with the output cables. Even so, the Direct type of attenuator sounds the best as it has no output cable.
What if -52db isn't quiet enough
I can make  custom values to -70db