The Behringer DCX2496 digital xover is an incredible tool for extracting the most from a bi or tr-amped system.  The combination of high xover slopes (48db if wanted), all manner of EQs, and time alignment allow transparency to emerge without the limitations of passive xovers and room interactions.  However, even though the stock Behringer has great functionality it has ordinary ADCs, DACs, power supplies and analog stages (hey, it costs less than $300...it is amazing it sounds any good at all!).  This is where we come in.  The stock Behringer is OK sounding but modified it is close to invisible.  This xover is sold as part of the Emerald Physics CS2 speakers and we will be also selling it modified with our upcoming speakers.  If you think your Emerald Physics, Magneplanars, Open Baffle, Horn speakers, etc. sound good with the stock xover you have a treat coming.

The modified Behringer can also be used as a stand alone DAC with the benefits of full speaker/room equalization.....imagine, totally flat frequency response at your listening position with no nasty bass nodes.  Also, with our attenuator option it can function as a DAC and preamp.  The Behringer upsamples digital inputs to 24/96 on the input and then runs all the processing at 24 bits.  The analog inputs are done at 24/96 using the latest AKM ADC chip with our own super input stage.

The Behringer DEQ2496 equalizer has the same basic circuitry as the DCX and can be modded to the same results.
  
Below is a beginning list of the things we are doing to both machines and the current pricing. 

1.  Substitute OFC RCA jacks for the existing XLRs.  Most people use RCA jacks and using adapters is a sonic no no.  $40 per pair.   $120 for analog in and two sets analog out.  Of course, we can use Eichmann or WBT jacks for extra money.  However, the OFC Soundconnections jacks are excellent.

2.  Add OFC RCA jack (or BNC jack) to side of chassis for direct digital in.  We wire the jack directly to the input transformer and change the load resistor to 75 ohms for best impedance match.  $25.00   If you want balanced in then we can wire the existing stock XLR directly to the input transformer for $10.00

3.  A to D and input stage mod: Custom analog input stage for the AtoD converter.  We make our own circuit board with a very pure simple circuit and hardwire it directly from the input jacks and also directly to the input pins on the connector on the main board.  We also change the A to D converter to the latest converter from AKM....the AKM 5394.  Blackgate caps, Wima caps and Dale resistors are used here.  $200

4.  D to A mod: We change two of the three the DACs in the DCX to the latest 24 bit AKM DACs the AKM 4396.  We also change several power supply caps to Blackgate.  $125.  For all three stereo DACs the cost would be $165.  There is only one DAC in the DEQ equalizer so the price is $85 for this mod to the DEQ2496.

5.  Custom output stage:  We delete all the parts on the output board and substitute our own circuit board with super simple output stage directly coupled to the output jacks.  This circuit board is wired directly from the pins on the main board.  We are now using (5-27-09) our new super op amp and the sound is even better.  Combined with the optional discrete regs below you will have an output stage that has next to zero sound....super transparent!!!  Much more drive, dynamics and better bass than transformer based output stages.   I know, I am the one who turned those other modders on to trannies......but now we have something better.  Also the active stage can be used with a shunt attenuator in front of it for full or partial volume control.  For four channels the cost is $160 unbalanced or $200 balanced .  Six channels would be $240 or $275 balanced.  There is only one stereo output stage in the DEQ so this mod would be $85 for the DEQ2496.

We consider all the above to be "must do/have" and consider it our standard package.     The total cost for a basic mod (for biamping) to the DCX2496 with RCA jacks, analog A to D mod, digital RCA in, D to A mod and four channels of outs would be $630 .  The total for the basic mod to a DEQ2496 is $475 .

6.  Add two modified discrete regulators for all the opamps on the input and output..... $100 .  In conjunction with our new op amp output stages this is quite something.....super transparent.  Super recommended!

7.  Change the 24 meg clock to our world beating EVSClock 1.5.  Cost is $300.

8.  4 channel shunt attenuator for the DCX.......TBD  $350?