justin

there are several ways to do it, a transformer would be one of them some other options: - create an inverted signal with a pre-amp such as a Dynalo circuit, but there would be nothing in the non-inverted signal path before the Dynafet. This is done in some expensive stuff like the Pass Labs Ono phono pre-amp - convert SE to balanced with a pre-amp like a Dynalo; see the "Balanced Bridge" version on Headwize Both of the above methods add active circuitry to the signal path that you really don't need. - Use 2 Dynafet boards per channel, one + and one -; Use switches/relays so the inverted board can also be used as only a balanced bridge output from the non-inverted board. - Use 3 Dynafet boards per channel, one +, one -, and one partially populated board as a balanced bridge output. Uses more power and will need bigger heatsinks. It's redundant but it's probably the most reasonable DIY solution if you don't want to add a transformer or additional active stages to the amp

i havent seen the latest schematic but why would a jumper be needed? can you put in the resistors/caps for both feedback methods and then allow the builder to choose which to populate?

maybe but that would be also be a good reason to change all the labels to R1, R2, etc, or at least label the parts that could be changed that way

you really should move the feedback loop trace and connect it exactly to the output pad. same thing w/ servo although that's not as critical. id also add a LPF on the inputs, it was beneficial on the dynahi

That beats the price I found by $5, but there are no recent reviews of "Palm Beach Digital"

i'll be ordering one and the lowest price is $1050 w/ free shipping Unfortunately the Krell SACD Standard I bought has too many problems - unreliable in detecting SACD layers on the first, second, or third try - digital filter select buttons do not work - can't go to previous tracks (back button will only restart current track) - annoying high freq noise in standby mode I'm going to try to get it fixed but my expectations are very low

n/m dont think it will work

The dynalo is extremely stable at unity gain without capacitor compensation

I'd say it's very likely I could bring Vicki's BHSE to the meet

2 strikes, 1 for posting about a DAC in the full-size Headphone forum, 2 for being a MOT

i'm guessing that was made as an extrusion because they only have 1 internal hole to keep cost down. by far the greatest cost would be the die, about $1-1.5k

wikipedia: The term "bowl" originated from the Rose Bowl Stadium, site of the first post-season college football games. The Rose Bowl stadium takes its name and bowl-shaped design from the Yale Bowl, the prototype of many football stadiums in the United States.

What is the cost to do it wire EDM? Looks perfect for a small extrusion which would then be cut to length. Or maybe laser cut out of a giant sheet if they do 1/4" thick aluminum

I have the circuit boards ready, and the raw enclosures were finished today -- they just have to be sent off to be made pretty, so probably 4-6 more weeks

Is it entirely USB powered? Lack of power supply which would be necessary for a SPDIF input is a major $$ saver

or you could get a USB DAC that is optically isolated and is self-powered

I think they're just a good idea for isolating the headphone amp from any amps/receivers that are left permanently connected to the pre-out. Some of them will short their inputs when another input is selected or the power is turned off.

BHSE pic update...almost there... laser engraving then it gets sent to KG for some kind of blessing ceremony and then its ready

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beat ray samuels in counterstrike

moar pics later tonight if im still awake

i would use larger than 10 ohms, something like 50 or 100

Audiophile hard drives? you sir are a genius