At 4/3/2007 10:24 PM, EricJ wrote:
>When it comes to phono preamps that are capable of
>historical EQs, I was wondering...
>1. How many people use anything but RIAA, NAB, and FLAT
> EQs for digital transfers when doing preservation work?
For 78s and pre-RIAA LPs, I generally use a tube-era preamp that has
front-panel adjustments for Turnover and Rolloff. A McIntosh C-8 is
particularly flexible, but it requires an early Mac power amplifier
as a power supply. I also like my Scott 121-C, with the Dynaural
Noise Reduction function. I wouldn't use the noise reduction for
preservation, but it's nice for casual listening. Of course, any tube
equipment of that vintage almost certainly needs to be re-capped
before you would want to use it for serious work.
>2. Is the ability to reproduce a wide range of EQs on the phono
>preamp important, or do you apply the final EQ in the DAW using
I think either approach is acceptable, as long as the EQ is correct.
>3. Do you use an analog processor in conjunction with your DAW to
>apply EQ later to a FLAT digital transfer (ie. an analog processor loop)?
>4. How often do you run into the situation where your phono preamp
>doesn't have the EQ you want? It gets close, but not quite what you want.
That is not an issue with either the Scott or the McIntosh preamps.
>8. If the phono preamp has accurate EQ(s), is quiet, and has low
>distortion, does anyone prefer tube versus solid-state
>electronics? Does this matter?
Obviously, I'm partial to tubes, but for RIAA EQ, I also use
solid-state (including a McIntosh C-24, a Stanton 310 and some other
broadcast preamps with balanced outputs
>9. Do you use a custom-built phono preamp or a commercial phono preamp?
They're all commercial devices.
>And if there's a phono preamp that supports historical EQs that you
>really absolutely love, let me know, because maybe I should be buying
>instead of building.
As I said earlier, I like both the Mac C-8 and the Scott 121-C.
Unfortunately, both are subject to the demands of the loony
collectors' market, so the prices are out of line with their value as
playback tools. You can find relatively inexpensive C-8s, but they're
useless without an expensive MC-30 or 20W-2 amplifier to supply power
to the tubes.