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Old 14th March 2003, 10:30 PM   #11
ppl is offline ppl  United States
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peranders. that was the concensious of myself also
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Old 29th July 2003, 10:59 AM   #12
ppl is offline ppl  United States
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This is the Compleated Amp so far almost done. I have decided upon a set of (4) Buffers as the THD went down with each Buffer addition with 2 volts RMS into 32 ohm Resistive loads.

The Results of using 1/2/3/4 Buffers per Ch

@ 1KHz> (1) Buffer (2) Buffers (3) Buffers (4) Buffers
THD, %: 0.051 / 0.025 / 0.014 / 0.0084
IMD, %: 0.045 / 0.024 / 0.020 / 0.019

The Op-Amps used in the Above are the AD-8610AR

The Sound is fantastic with the halmark of this Amp Being soundstage. since i got such great imaging with Headphones I thought some low volume listening with Gasp! a pair of small loudspeakers (Radio Shack Pro77 Metal box type) were in order and what a great treat that was with some parts coming from below the Floor. Most Loudspeaker Amps will not do that with alot more costly loudspeakers. Overall I am happy with the Measured and sonic performance of this Amp. BTW this version uses OPA-637 in gain channels and OPA-627 in the Ground Driver Channel.

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Old 31st July 2003, 04:11 AM   #13
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anyone noticed how much adires preamps cost?


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