Prototype images

Doc B

Former President For Life
Staff member
After three years of prototyping, listening, tweaking, nudging, renudging, re-prototyping, re-listening, and repackaging, we have a DAC! These are images of our functional prototype. Like all Bottlehead products the emphasis is on performance and the packaging uses the philosophy of form follows function.

We had initially planned to do this as a kit. However the main board is very sophisticated and very expensive to manufacture. We decided that we didn't want to raise our customers' blood pressure (or ours!) with scary proposition of having to buy a many hundreds of dollars replacement board in the event of an assembly mistake. So we will be offering the DAC in finished form. There will be a future battery supply upgrade that will be in kit form.

The front is very simple, with a smoked acrylic panel holding a power switch, input selector switch and the ubiquitous likeness of Doc B. Behind the panel stands an old school seven segment red LED display that indicates the sample rate of the file being played - which is set automatically each time a new song is started, up to 384kHz via USB.

The back panel has an HDMI socket which will be used for future added features, RCA output jacks (nominal output is 2V) and a power inlet across the top row and USB, TOSLINK and COAX S/PDIF inlets across the lower row.

As those who have been following the long development of this project know there is a LOT more cool stuff going on inside, and those who have heard it know that it is quite a special piece of gear. I am here late at the office tonight just to get these pics up. I will add more info about the DAC and how we plan to crowdfund the first production run over the next couple of days.
 

Attachments

  • DAC2ndpassvid.jpg
    DAC2ndpassvid.jpg
    50.4 KB · Views: 859
  • DACbackvid.jpg
    DACbackvid.jpg
    35 KB · Views: 709
Don't want to ruin your crowdfunding plan but +1 for the pre sell. You already got my cc number.
 
Thanks, we are most happy to hear from those who want one! We are crowdfunding just to be sure that we can swing the first run OK. I checked my wallet and I am completely out of $30,000 bills. So we are going to need 20 people to commit to do this thing. I will be working on the setup starting tomorrow and will get something together ASAP.
 
Not sure if I have the cash to purchase (new roof about to go on the house) but wish you all the best with the project and am looking forward to seeing the Dac up on Kick Starter.
 
The price will be $1550. I'm putting together details about the DAC and how it functions. Should be together in a couple days. We have also been working on dressing up the final appearance a little bit.
 
Smart move keeping the price as originally announced but saving the battery for later upgrade. I think that's a fair trade-off. Definitely interested, but funds are low... Here's hoping the crowd sourcing is successful!
 
mcandmar said:
Doc can you give me some info on the power requirements, AC or DC and voltage?

We will supply a universal wall wart with the DAC.  The DC voltage can be between 6V and 9V DC, power consumption is pretty low, something like ~400mA (Swenson is going to pop on here and correct all this I'm sure!). 

-PB
 
Thanks Paul, that's enough for me to stew over for the time being.  I will have plenty of questions for John when he comes along so i'll start a separate thread to discuss further...
 
Here is a rendering of my plan for the front panel shape.  More details and specs are sitting in a PDF at the moment, and John is pouring over them to be sure nothing is missing. 

-PB
 

Attachments

  • DAC.png
    DAC.png
    11.7 KB · Views: 786
Back
Top