ABX Double Blind Test Results: Wires
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PSACS ABX Test Results
Interconnects and Wires
Interconnects and Speaker WiresResultCorrect p less thanListeners
$2.50 blister pack phono cable vs. PSACS Best Same 70 / 139 = 50%-7
$418 Type "T1" Biwire vs. 16 Gauge Zip Cord Same 4 / 10 = 40%-1
Type "Z" Biwired Speaker Cable vs. 16 Gauge Zip Cord Same 70 / 139 = 50%-7
$990 "T2" Speaker Cable vs. 16 Gauge Zip Cord Same 16 / 32 = 50%-2


In the first test, five specialty interconnects from AudioQuest, MIT, Monster Cable, H.E.A.R., plus Belden cable with Vampire connectors were compared to a $2.50 blister pack RCA phono interconnect. Listeners used Etymotic Research ER4 in-ear phones driven by the headphone jack of a Bryston 2B power amplifier.
The next three tests are the data from Tom Nousaine's "Wired Wisdom: The Great Chicago Cable Caper", listed on the ABX periodicals page.
The Type "T1" cables were compared on a system including an Sumo Andromeda power amp and JS Engineering Infinite Slope speakers, by the system's owner. He chose his own program material and had no time limit.
The Type "Z" cables were tested on the system of a high end audio shop employee including: Snell type B-Minor speakers; Forte Model 6 Power Amp; and an outboard DAC. He used his own program material selected to show the differneces he expected.
The Type "T2" cables were compared on a system including a Denon DCD-1290 CD player, and Accuphase P-300 power amplifier, and Snell KII speakers.
Send questions or comments on the PSACS tests to Tom Nousaine.
Different The different symbol means it is unlikely the percent correct score occurred by chance and thus the null hypothesis was disproven, which substantiates a real difference in sound quality.
Same The same symbol means that it is likely the correct score occurred by chance, the null hypothesis is not rejected, which means no difference was found. It does remain possible a difference may be substantianted with further testing.
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