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Description

With modern techniques, the MPX-4Aii's transformerless input design rivals and even surpasses the best transformer-input designs that were the standard in the industry earlier. This is especially true in low-level input applications to achieve extremely low noise floor, minimum distortion, wide bandwidth and linear phase response. This approach can be obtained a warm sound, crystal clear and fast response, getting a step closer to the human ear characteristics. Each MPX-4Aii unit uses a Class A, auto-bias bridge configuration, hybrid input stage preamplifier based on hand-selected transistors for the lowest of noise, and the lowest possible base-spreading resistance and collaterally matched for perfect balance, and biased at the precise levels that make them maximally insensitive to thermal drift. As a result, no offset crowding occurs, and the dynamic range remains wide open. Because of the wide gain-bandwidth parameters of these specially-selected transistors, and the super-low impedance characteristics, and the vanishing circuit reactance, the impulse response is optimum, and phase-delay distortion undetectable. Gain adjustments are made with balanced differential-mode cancellation, preserving the excellent DC offset characteristics, without altering the loop feedback characteristics from their optimal configuration.

Discussions

Focusrite Green 1 Dual Mic Preamp...worth owning?

You could probably use it as a doorstop or glorified paper weight. heh It's not a very good preamp....

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Pre Upgrade from a 1604VLZ

You could also get 4 channels for Sytek MPX-4Aii for around $900. Also you could pick up 2 True Systems P-Solos for $998, Audient Mico $660, DAV BG1 . GAP PRE73 is somewhat of a bargain!!

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Question: XLR to RCA transformer

...better term to use. If this helps, a few of the preamps I'm looking at are the Line Audio 8MP, Sytek MPX-4Aii and the Warm Audio WA-412. From what I can tell, the Line Audio and Sytek don't have output transformers, but the Warm Audio does. I'm still learning obviously so feel free...

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