Graham Slee Elevator EXP for use with Graham Slee eragold or Reflex M.

Almost NIB Graham Slee Elevator EXP ($905.40 new) with PSU-1 Power Supply Upgrade ($299 on its own) a total of $1204.00 New! 

To be used with Graham Slee eragold or Reflex products to allow for MC expansion of those MM products. 

REVIEWS:  Read it, its a great explanation

http://stereotimes.com/acc103105.shtml

Product Description:

The Differences Between The Elevator EXP And S.U.T.s

Part 1: the hum

For a start, the Elevator EXP doesn't hum. Transformers do.
To be correct, the transformer itself doesn't hum, but the magnetic surrounding
fields easily get induced into it.

These magnetic fields are predominantly mains-borne. There
are a number of hum sources including all your mains powered equipment,
surrounding mains powered products, and even the wiring you see, and the house
wiring you don't see - all emitting magnetic fields by differing amounts.

The SUT, being a transformer, is influenced by them all. The
result is hum. No matter how well shielded its case or how well you carefully
position it, in most cases that isn't very successful.

The Elevator EXP is an amplifier - it doesn't contain a
transformer so it's harder for hum to be induced into it.

Part 2: weird things to do with the bass

Bass frequencies are the lowest audio frequencies, below
which everything becomes DC or direct current. DC doesn't commutate from
positive to negative - it doesn't 'cycle' - so it cannot be transformed. Low
bass frequencies to a transformer move so slow that they're 'almost DC', As a
result transformers distort most of all at low frequencies.

All sorts of tricks and adjustments are employed to reduce
this distortion - many include the use of expensive metals and labour intensive
winding techniques in a bid to overcome the bass distortion. This is why good
S.U.T.s are so expensive.

But the distortion is never really overcome and in the place
of detailed bass, all the transformer can really do is 'fudge' the sound. You
might have heard people refer to the bass they get as a 'smooth chocolatey
sound'? I suppose that's similar to fudge...

The electronics of the Elevator EXP however, don't cause
anywhere near such levels of distortion, so all the bass details - the layering
and the timbre (the characteristic sound of an instrument or voice) is there to
be heard and enjoyed.

Part 3: 'signal theft'

All transformers require excitation current before they will
pass any signal. Where do you think the S.U.T. gets its excitation current
from?

Has it a power supply? No. So obviously it uses some of the
signal as excitation current.

That would be OK but for the fact that magnetic cartridges
don't have a linear response - their bass is much weaker than the highs, and so
more is 'stolen' from the lows.

That's the reason you'll often see additional components
inside a S.U.T.'s casing - these being used to straighten-out the frequency
response.

I think you'll agree by now that the Elevator EXP step-up
amplifier is the better option.

Suitable Cartridges

Low output moving coil (MC) with output in the region of
0.15 - 0.8 mV (ref 1kHz at 5cm/sec)

The Elevator EXP must always be used between cartridge and a
moving magnet sensitivity input. It must never be used 'post EQ' - after the
moving magnet phono preamp.

Specification

ItemMeasurementInput range0.15mV to 0.8mVOutput (for input range)2mV to 10mV, suitable for a moving magnet phono stage inputMaximum input378mV rms (a very large overload margin)Maximum output4.914V rmsGain22dB (13) < 10Hz to 917kHz (-3dB points)Input impedance23, 30, 100, 840, 1000, 5100 and 47000 OhmsOutput (driving/source) impedance300 OhmRecommended load impedance47k Ohms phono stage preamp inputNoise at output-99dB CCIR Q-pkDistortion0.02%Frequency response< 10Hz to 917kHz (-3dB points)Channel balance0.2dBChannel separation64dBSize (approx.)W: 107 x H: 50 x D: 180 (mm) inc. jacks

REF: Phono, Pre, Eragold, Reflex, MC, Moving Coil