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Author Topic: Eddie Current Red Top Headphone Amplifier (Now "Black Widow")  (Read 18849 times)

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Marvey

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Re: Eddie Current Red Top Headphone Amplifier
« Reply #100 on: April 20, 2015, 06:57:34 PM »
Quote from: jacal01 on April 20, 2015, 03:49:44 PM
@ purrin:
 I thot Craig was going to let this amp ship with the internal flyback transformer and wall wort, and the external ±24 Vdc PS to be a later upgrade option.  However, it may well be best to let it show off its best potential right out of the chute, as you say, considering its current competition.  I for one am an advocate for the external PS option being available from EC for the BW, rather than a DIY project in the near term.

That's still the plan. Just want to iron out a few things before production to be sure both power brick and external PS will work.

Making the external PS a DIY project - that idea has been shitcanned. EC will provide one.
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x838nwy

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Re: Eddie Current Red Top Headphone Amplifier
« Reply #101 on: April 24, 2015, 03:12:12 PM »
The EC website seems to suggest that the bw is now available. Where cam i find out specs re. Inputs etc? (Number, balanced/se, etc)

Thanks guys ;)
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CEE TEE

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Re: Eddie Current Red Top Headphone Amplifier
« Reply #102 on: April 24, 2015, 06:11:12 PM »

When can I send my $$$ and how much?  Craig gets cranky when I just PayPal him money.  Which is very interesting.
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Marvey

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Re: Eddie Current Red Top Headphone Amplifier (Now "Black Widow")
« Reply #103 on: April 24, 2015, 08:32:38 PM »
Just hold on a bit longer. External power supply is done. We were going to get power and bandwidth measurements today, but we decided to call it a day.
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audiofrk

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Re: Eddie Current Red Top Headphone Amplifier (Now "Black Widow")
« Reply #104 on: April 25, 2015, 11:08:37 PM »
where you able to source enought transistors for the initial run?

Earlier you said some where already accounted for how many are still up for sale?
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Marvey

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Re: Eddie Current Red Top Headphone Amplifier (Now "Black Widow")
« Reply #105 on: April 26, 2015, 12:52:24 AM »
E-mail Craig and copy me to express interest. We aren't taking deposits yet. We got enough for future runs, so no worries if you can't get into this one.
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jacal01

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Re: Eddie Current Red Top Headphone Amplifier (Now "Black Widow")
« Reply #106 on: April 27, 2015, 09:34:06 PM »
@ purrin:
Which external power supply did you lock in on?  Mercury vapor tubes?  Dual regulated SS?
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Marvey

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Re: Eddie Current Red Top Headphone Amplifier (Now "Black Widow")
« Reply #107 on: April 28, 2015, 03:12:11 AM »
Quote from: jacal01 on April 27, 2015, 09:34:06 PM
@ purrin:
Which external power supply did you lock in on?  Mercury vapor tubes?  Dual regulated SS?

No tubes. We decided that going with a tube PS would have defeated the point of an EC SS amp. We wanted to meet a certain price point. Ended up with a shunt power supply. It easily sounded the best among the five we wired up in the past two weeks. We are sending a very proto PS along with a near production BW up to Zerodeefex tomorrow.


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AstralStorm

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Re: Eddie Current Red Top Headphone Amplifier (Now "Black Widow")
« Reply #108 on: April 28, 2015, 03:30:22 PM »
Any idea how well it sounds out of a suitable linear regulated laboratory PSU?

Say, this puppy which costs <$400: http://www.tti-test.com/products-tti/psu/npl-series.htm (PL303)
or cheaper: http://www.tti-test.com/products-tti/psu/elr-series.htm (EL303R, <$300)
(Almost identical to Sorensen/Ametek/Elgar XEL30-3, which is 3x more expensive thanks to brand name.)
« Last Edit: April 28, 2015, 03:52:18 PM by AstralStorm »
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audiofrk

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Re: Eddie Current Red Top Headphone Amplifier (Now "Black Widow")
« Reply #109 on: April 28, 2015, 04:06:43 PM »
Purrin have you guys settled on the Imputs?  Will it have rca or just xlr
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