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I prefer the FETs (170/74, 109/389 and 489/689), but it isn’t a night and day difference. The offset will be lower with them. For the 3 Dynalo minis that I built, 2 of them used 489/689 FETs and one used THAT340. I haven’t listened to them extensively, but didn’t notice huge differences. The FET boards were easier to bias and seem a bit more stable. Sent from my iPhone using Tapatalk

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Looks like Mouser has some Abracon that have the built in cap. And yes, all of the Murata ones they stock appear to be EOL.

We weren't worried about you disappearing I know these group buys are a lot of work (for you); take your time and make sure things are where you want them before pulling the trigger.

RIP Margot...

Thank you for all you have done Tyll, and for all of the laughs along the way! I certainly hope that your retirement travels find you healthy and living the life that you have dreamed of! Sent from my iPhone using Tapatalk

Probably very sound advice. My son followed up with this: As far as interfaces with SPDIF inputs there isn’t much on the market that’s cheap. If he wants to get a more serious setup he could look into getting a Scarlett 2i2, which is a USB interface with two Mic Pre’s on it that double well as hi-z guitar inputs. It has two 1/4 inch outputs for speakers and a headphone jack. Not sure what he’s using the Central Station for currently but it doesn’t work out as an interface, it’s more of a monitor management system.

Speakers or headphone drivers in general aren’t single ended. If the cable is wired with 4 conductors, 2 to each cup, then you should be able to use it with a balanced amp. Is it terminated in a 4 pin XLR? Sent from my iPhone using Tapatalk

Happy Birthday! Sent from my iPhone using Tapatalk

This is what my son had to say about it. Ironbut’s input above is what I thought as well and is a good place to start: That won’t really work per say, thunderbolt and spdif are two complete different formats and I don’t see anything for a connector to connect the two. Depending on what he’s working on and how “professional” he needs it to sound, his best bet would be to get an dual RCA to 8th inch adapter or dual quarter inch to 1/8th inch Y-Splitter (typically forbidden in any professional grade sound) run his Audio port on his MacBook as an input as opposed to an output. Other than that if he can find a small interface that has ADAT or SPDIF capabilities that would be his best bet in recording music with his presonus in the future. There doesn’t seem to be any type of digital output on it other than Toslink/ADAT or SPDIF. I’ll take a look and see what I can find for interfaces. Sent from my iPhone using Tapatalk

I asked my son (who is in music production/recording engineering at Columbia college). I'll let you know if he has any insight. From what I know, Thunderbolt doesn't do SPDIF, so you are probably going to need some sort of adapter (OWC? maybe Monoprice?).

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Happy Birthday Ari! Sent from my iPhone using Tapatalk

Can't you back out of Massdrop drops if you haven't been charged yet? Point her to this thread...

Happy Birthday Shelly!

I’ll probably do the same. I did get a quote back from Cam Expert. They would run at least $200/case... not even competitive. Sent from my iPhone using Tapatalk

Very nice, as usual, Søren! What are your impressions of it?

Happy Birthday Steve!

Ahhh, gotcha. Carry on

There isn't enough room under the board for screws in the IEC? What is the dimension from the bottom of the board to the case bottom?

Probably, but with Heinz, it seems to depend upon day/mood I'll give him a shout. How many TKD/Alpha?

Would you like me to get a quote from CAM Expert based on johnwmcleans FPE plans (known to work)?

I guess I must have used these guys via ebay. Bought some of these knobs from them: http://www.goodcomponent.com/products/knobspotentiometers/aluminum-knobs/30x25mm-black-anodized-cnc-machined-solid-aluminum-volume-potentiometer-knob-with-set-screwgdak0178-1307.html Nicely made, have a good feel to them. I'd rather just buy direct from them. Thanks for the link!

Happy Birthday!

I thought that that was fairly well known, that the SACD mix was a better one (or at least different) than the Redbook version? Part of selling SACD as a medium? I could be wrong...