Gieseler Audio Posted April 23, 2019 Author Share Posted April 23, 2019 (edited) OK so I’m thinking two version options. 1. Basic volume control only version which would have line in/line out & be a simple replacement for the volume control in an amplifier. 2. Volume control plus input selection. This would be a larger board with say three or four pairs of RCA sockets & would suit a full DIY amplifier build. Both versions would require an AC input of 12+12v or +- 20 to 30v DC sourced from within the amplifier. The AC 12+12v option is best as it would be totally independent & with better filtering. Just use a small transformer from say Jaycar. https://www.jaycar.com.au/24v-3-6va-150ma-centre-tapped-type-2854-transformer/p/MM2018 The unit would be supplied with my usual 2.8” OLED display & remote control. These are the same components that are used in the Gross/Fein DAC’s. Control is totally via the remote with no physical pot/knob. Cost; The Muses chip is $36 + Muses buffer, OLED display, pcb, micro & remote are the major cost components so there is about a $100 for those. Then build time, shipping packaging & most important my IP for the code which makes the whole thing work smoothly. A rough ball park figure would be in the $300 to $400 range to make it a viable product for me. Still interested??? Bear in mind this is a high quality design & anyone wanting a cheap basic unit there are tons of options from China via EBay. Edited April 23, 2019 by Gieseler Audio 1 Link to comment Share on other sites More sharing options...
Scratcher Posted April 23, 2019 Share Posted April 23, 2019 Sounds great Clay. Is it possible to have a balanced volume control only option with XLRs in and out? Link to comment Share on other sites More sharing options...
Gieseler Audio Posted April 24, 2019 Author Share Posted April 24, 2019 Sure - but it will bump the price up as I will need two Muses vol control chips & two Muses buffers & a different pcb. I guess about $100 extra Link to comment Share on other sites More sharing options...
Mickstuh Posted April 24, 2019 Share Posted April 24, 2019 I'm interested in this, but perhaps from a slightly different angle. I have no DIY skills, so that's me out (as far as inserting it into an amp). But I do want a switching box. I have one, but it's designed for video plus audio, and I'm not convinced it doesn't degrade the signal. I havent been able to find a better one that has a remote, which is required. And a passive one won't excel in my setup. Basically I like a switching box to compare preamps, without having to change cords etc. So multiple inputs with a remote that switches inputs (and does volume) as a standalone self-contained unit would attract me. (Even more attractive to more people if it could also output to multiple power amps.) 1 Link to comment Share on other sites More sharing options...
Gieseler Audio Posted April 24, 2019 Author Share Posted April 24, 2019 Yes I could certainly offer it as a fully built up self contained unit. It would only bump the price up slightly - just case & PSU being the extra cost. I would probably use the Klein case as I am set up for that already. OK sounds like I need to get serious about this. Maybe a self contained demo unit first that I could send out then everyone could get a feel for the sound quality control etc. 1 Link to comment Share on other sites More sharing options...
Mickstuh Posted April 24, 2019 Share Posted April 24, 2019 Sounds like a good idea to me Clay Link to comment Share on other sites More sharing options...
Suopermanni Posted May 2, 2019 Share Posted May 2, 2019 @Gieseler Audio I could use a basic volume control version with XLR in and out, if that's possible? I'll be in receipt of a power amp and an HP amp that has balanced input but not volume control soonish. Link to comment Share on other sites More sharing options...
OCD Posted August 6, 2019 Share Posted August 6, 2019 On 24/04/2019 at 8:23 AM, Gieseler Audio said: OK so I’m thinking two version options. 1. Basic volume control only version which would have line in/line out & be a simple replacement for the volume control in an amplifier. 2. Volume control plus input selection. This would be a larger board with say three or four pairs of RCA sockets & would suit a full DIY amplifier build. Both versions would require an AC input of 12+12v or +- 20 to 30v DC sourced from within the amplifier. The AC 12+12v option is best as it would be totally independent & with better filtering. Just use a small transformer from say Jaycar. https://www.jaycar.com.au/24v-3-6va-150ma-centre-tapped-type-2854-transformer/p/MM2018 The unit would be supplied with my usual 2.8” OLED display & remote control. These are the same components that are used in the Gross/Fein DAC’s. Control is totally via the remote with no physical pot/knob. Cost; The Muses chip is $36 + Muses buffer, OLED display, pcb, micro & remote are the major cost components so there is about a $100 for those. Then build time, shipping packaging & most important my IP for the code which makes the whole thing work smoothly. A rough ball park figure would be in the $300 to $400 range to make it a viable product for me. Still interested??? Bear in mind this is a high quality design & anyone wanting a cheap basic unit there are tons of options from China via EBay. Is this still in the pipeline?....would be interested in a 8in/8out version, no input switching required....would just sit above a multi channel amp. Link to comment Share on other sites More sharing options...
Gieseler Audio Posted August 6, 2019 Author Share Posted August 6, 2019 Sorry on hold at the moment due to work load. Check out Academy Audio as they use the Muses chip in their kits https://www.academyaudio.com/diy-products Link to comment Share on other sites More sharing options...
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