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Old 21st November 2005, 12:38 PM   #21
Nuuk is offline Nuuk  United Kingdom
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Quote:
IMHO seems this all seems errr ....redundant.
If you don't understand the importance of impedance matching different parts of the system, I guess that an active buffer/pre could seem superfluous (or redundant if you prefer).

As Filholder says, it does to some extent depend on what sort of sound that you like but IMHO, the sound is preferable with an active stage before the GC's (and class-T amps)!
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Old 21st November 2005, 04:43 PM   #22
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I fixed the pctures at the start of the thread so you can see how it looks.
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Old 21st November 2005, 06:43 PM   #23
Hara is offline Hara  United States
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Hey Russ,

On the Twisted Pear website do you have a feature list of the Kookaburra? I see a parts list, but it would be nice to have a short explanation of the design and purpose of the components or feature list so people can make comparisons. (or a thread to point me to the preamp, I can't find it for some reason)
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Old 21st November 2005, 06:57 PM   #24
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Here you go.

Digitally controlled preamp/headphone amp
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Old 21st November 2005, 07:08 PM   #25
paulb is offline paulb  Canada
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Is the Yardbird the opamp / BUF634 one? What is its status?
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Old 21st November 2005, 08:02 PM   #26
Hara is offline Hara  United States
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I thought that was the thread, but when I saw the word "Cirrus CS3310" and didn't see Kookabera immediately, I was thinking that was the wrong one.
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Old 21st November 2005, 08:32 PM   #27
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Yes, I can understand the confusion. Before I studied the datasheets, the Cirrus chip was considered.
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Old 22nd November 2005, 09:40 PM   #28
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Default Single channel Freebird..

Here is the freebird single channel.

The PCB is tiny. (less than 2x2)

Here is how it looks.
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File Type: png pre.png (28.5 KB, 1365 views)
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Old 22nd November 2005, 10:01 PM   #29
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Default Freebird Copper PDF

Copper side:
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File Type: pdf copper.pdf (39.4 KB, 229 views)
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Old 22nd November 2005, 10:02 PM   #30
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Default Freebird Component PDF

Mirrored component side for toner transfer:
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File Type: pdf comp.pdf (50.7 KB, 160 views)
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