Audio DAC Upgrade - The Beresford 7510 Audio DAC Upgrade offered by Tirna Electronics Ltd

Upgrade to Wolfson WM8716 DAC chip

The Beresford DAC upgrade which replaces the Burr Brown PCM1716 DAC chip with the pin-compatible Wolfson WM8716 DAC chip. The work involved is the same as for the 7520 with the addition of 2 wires from pin-16 of the new DAC chip to decoupling capacitors as recomended on the "Art of Sound" forum.

• For delivery outside Europe we charge £35  which includes postage by "International Airmail Signed For" delivery and £200  insurance.
• For delivery in Europe but outside the UK, we charge £35 which  includes VAT and postage by "Airmail Signed For" delivery and £200  insurance.
• For delivery in the UK we charge £30 which includes VAT and  postage by "Special Delivery" and £200  insurance.

Additional Upgrades:

Op-amp upgrade.

In addition to upgrading to the Wolfson WM8716 DAC chip you may want to upgrade the dual op-amp in the Beresford 7510 with an LM4562 dual op-amp. This upgrades includes the addition of a 0.1uF decoupling capacitor.

• For delivery outside Europe we charge £45  which includes postage by "International Airmail Signed For" delivery and £200  insurance.
• For delivery in Europe but outside the UK, we charge £45 which  includes VAT and postage by "Airmail Signed For" delivery and £200  insurance.
• For delivery in the UK we charge £40 which includes VAT and  postage by "Special Delivery" and £200  insurance.

Capacitor Upgrade.

There are four electrolytic capacitors which can be replaced with larger(47uF) capacitors. Most of the 7510's we have seen to date have already had this upgrade performed so we do not expect to be asked to do this very often. It will also normally be done in conjuction with one or more of the upgrades above. Please contact us for an additional price if you want this capacitor upgrade done in addition to one or more of the above upgrades.

LED Replacement.

If you would like the LED's on the front panel of 7510 changed to blue as on the 7520 again please contact us for the additional cost of this modification

Upgrade to Caimen class”A” output configuration

The new limited edition “Caimen” DAC from Beresford has a class"A" output stage. We think this is for the headphone output but it may be on both outputs. We have been asked by several people if we have an upgrade which would take the 7510 to full Caimen spec. We cannot do this as we cannot perform an upgrade to either of the dual op-amp based circuits to make them class “A” configuration outputs. To do this would probably require a redesign of the PCB. We can only perform the Wolfson DAC chip upgrade and upgrade of the dual op-amps to better dual op-amps as detailed above. This is not the same as providing an upgrade to a class “A” output configuration.  You’ll have to buy a “Caimen” to get that.