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AK4490 USB Dac with dsd support.

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#881
Desmo said:
Thanks for the clarification Sonny. Excellent news, that this preamp has the drive to run (for a preamp) low imedance, so we don't need to invest in a dedicated head-amp.

I guess when driving 22 ohm cans, the output impedance set to 10 ohm is too much, resulting in a damping factor on only 2.2. With the 300 ohms cans this should be no problem.
Click to expand...


You are totally right about it. I am using it when testing the DAC input switching before sending them out. Just to make sure that they measures and sound as they should


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#886
Chassis.

I have got buttons today. The chassis I have 25 pcs of. Buttons for 8 right now. On Monday I will get volume knob.

The 22 of March I should have good quality RCA connectors which most brands uses.

So the plan is to ship end March but it has gone so long that I do not have track on who wants a chassis or not. With the chassis you will get a new encoder.. It was necessary to change the encoder pcb to fit it in the chassis. Also there will be a small pcb with USB connector for firmware upgrade of the frontpanel without the need for a rs232 cable



The button fits in a nylon bush from farnell.

5da2d4fa1f125b7e9516d8db325775e3.jpg


And that is how it would look from the front


6835da34c5a8558a43f4f64372724ada.jpg



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#888
I will make sure that the pcbs for the lps is ready at the end of march.

I got asked about the same questions on email.

So here it is.

1) preamp kit (389€)
2) AK 4490 USB DAC + discrete DAC kit (326€)
3) SMPS (73€) or LPS (155€)
4) Input / output connectors (45€ for XLR board and 45€ RCA board)
5) chassis (191€).

So an complete kit will cost for SMPS variant 1069€ + shipping and for LPS variant 1151€ + shipping

The powersupply board LPS should be ready for production next week.

Regardless if you choose SMPS or LPS everything can be powered form the SMPS and LPS.

7) I can also sell prebuild preamp/DAC/LPS for 1351€ + shipping with 2 years warranty
 
#889
Hmm. Could anyone here tell me which is which pin on J7? Someone must have soldered it before no? I cant figure a way to find out either since since pin 2 and 4 of five is gnd.
 

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#898
1) preamp kit (389€)
2) AK 4490 USB DAC + discrete DAC kit (326€)
3) SMPS (73€) or LPS (155€)
4) Input / output connectors (45€ for XLR board and 45€ RCA board)
5) chassis (191€).

So an complete kit will cost for SMPS variant 1069€ + shipping and for LPS variant 1151€ + shipping

The powersupply board LPS should be ready for production next week.

Regardless if you choose SMPS or LPS everything can be powered form the SMPS and LPS.

7) I can also sell prebuild preamp/DAC/LPS for 1351€ + shipping with 2 years warranty
__________________

Buyer list:

burninggecko - 1x Chassis, 1x LPS, 1x XLR, 1x RCA
Nikola Krivorov - 1x Chassis, 1x XLR, 1x RCA
Vitalica - 1x Chassis, 1x LPS, 1x XLR, 1x RCA
 
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