I have this preamp and have used it for about a year in the field and
it has proven pretty rugged. The switch has not broken...I haven't
even worried about it.
I usually leave the switch on low gain and the knob turned up to full.
This seems to give me the best noise/headroom situation.
Danny
--- In Klas Strandberg <>
wrote:
>
> Hi!
>
> I've had a look at the SP-Preamp from Soundprofessionals.com. They
> offer it for 159USD and says this is 100 USD below retail price.
>
> Obviously good with it:
> Nice box, nice belt clip, - stereo, low noise, good pip voltage, low
> current consumption (8mA), small, easy to handle. It's perfect for
> the user of low noise PIP-mic's, MT24/96 and Edirol R-09.
> It can also drive headphones with enough juice, at least my 250 Ohm
ones.
>
> Questionable:
> The box is not shielded, neither are the cables inside. There should
> be a note (like in the Telinga manual...) saying: "This preamp should
> be connected to battery operated equipment only." Indoors, connected
> to a mains operated recorder, you will get mains hum.
>
> The on/off switch will break. It is a only about 1 mm thick "finger"
> pointing out about 6 mm above the panel, switching the positions "off
> / low sens / high sens". It can be operated cautiously, but should be
> protected some way.
>
> Finally I don't like the volume wheel. (Gain control??) It seems as
> if it is a log. or even lin. double potentiometer in the gain
> circuit. So for the first 80% of it, very little happens, - then
> comes all of it. The one in my sample is also badly linked, so one
> channel go from left to right and then back again.
> On the other hand, this "volume" could be at maximum all the time,
> then setting the levels at the recorder.
>
> I don't know what happens if you short the output to ground, neither
> what happens if you turn the 9v battery the wrong way, which seems to
> be possible.
>
> For the ones who have better pip mic's than the recorder input, I say
> that this amp is worth 159 dollars. You get rid of the self noise!
> 259 is in my opinion too much, but I realize the problem. "Made in
> China" it would cost 39.99 at Radio Shack... Life is terrible.
>
> Klas.
>
>
>
>
> Telinga Microphones, Botarbo,
> S-748 96 Tobo, Sweden.
> Phone & fax int + 295 310 01
> email:
> website: www.telinga.com
>
>
>
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