Re: [LAU] checking passive input frequencies on non Hi-Z connection

From: Fons Adriaensen <fons@email-addr-hidden>
Date: Sat May 27 2017 - 12:39:37 EEST

On Sat, May 27, 2017 at 07:28:08AM +0200, Ralf Mardorf wrote:

> usually those inputs are just designed to fit the impedance,

which is really all that is required. Anything else (EQ, non-
linearity) can be done later in software.

There are different ways to provide a high-Z input. Provided
no signal attenuation is involved things should be OK.

> they are
> not designed to sound good. Such an input does replace an impedance
> converter, such as a DI box or a workaround using a stomp box, but never
> ever those inputs are able to replace a good guitar tube pre-amp.

Quality varies, but guitar preamps are not designed to 'perfect'
(in a technical sense) either. Most will not have a flat response,
add distortion, etc., all that to make the guitar 'sound good'.
Whatever specific frequency response a real guitar preamp will
provide (e.g. due to input capacitance combined with the inductance
of the pickup resulting in some resonance) can be had by classic
EQ as well.

> I might be wrong, but AFAIK those inputs are only provided by pro-sumer
> interfaces and not by professional interfaces, so don't expect
> first-class input amplifiers at all.

Pros will just use a DI-box. Combined with a normal mic preamp
that will provide exactly the same result as a typical high-Z
input - a clean sound without any guitar-specific processing.

Ciao,

-- 
FA
A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)
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Received on Sat May 27 16:15:02 2017

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