Groove Sleuth Mk.II Preamplifier
Sensitivity @ 5cm/s recorded velocity:
Nominal 5mV RMS (-44dBu); or 500µV RMS (-64dBu) when GS-MC option fitted.
Input load:
47kohms // 220pF (MM); 100R (GS-MC option); 150kohms, 9V dc phantom supply (PHLUX)
Gain (to computer output):
33dB (× 45)
Frequency response:
±0.1dB from 20Hz to 50kHz
Distortion:
0.005% THD at maximum output level
Equivalent input noise (EIN):
<500nV RMS (-124dBu), A-weighted. Input shorted.
Signal to noise (wrt nominal sensitivity and un-weighted):
80dB
Maximum input signal (prior to clipping at full charge
): 75mV RMS
Maximum input signal (prior to clipping after 6 hours on battery
): 60mV RMS
Headroom (wrt nominal sensitivity at full charge):
23dB
Headroom (wrt nominal sensitivity after 12 hours on battery):
20dB
Battery:
9V Ni-MH (nickel
–
metal hydride) E-block type.
iLOOP (Intelligent Loop)
Function:
Wideband, buffered loop-thru
Frequency response:
±0.1dB from 20Hz to 50 kHz
Output load:
47kohms (non-critical). Suitable for feeding any MM input
RIAA+ correction circuit option
Gain (to RIAA output):
37db/58dB (MM /MC); RIAA curve; pre-RIAA curve: Blumlein curve
RIAA response accuracy:
±0.2dB from 40Hz to 20kHz (RIAA)
RIAA IEC amendment:
Not implemented; rumble roll-off performed in software
RIAA Neumann Pole or eRIAA:
Not implemented
1
Phædrus Audio reserves the right to change specifications without notice.
Chapter 9 - Warranty and service
Service
If you experience a problem with a Phædrus Audio product, contact
. We will diagnose the
problem remotely and advise you of the warranty status. If a repair or replacement is required, we will issue a Return
Merchandise Authorization (RMA) number and tell you where to send the unit to be repaired. You MUST have an RMA
number before you return the equipment to Phædrus Audio's support service. Phædrus Audio will not accept responsibility
for loss or damage in shipping or for equipment returned without valid paperwork and/or a valid RMA number. Remember,
warranty is void if product serial numbers have been removed or altered, or if the product has been damaged by abuse,
accident or unauthorized modification and/or repair (see Phædrus Audio Limited Warranty for details). There are no user
serviceable parts inside.
PLEASE RETAIN YOUR SALES RECEIPT. IT IS YOUR PROOF OF PURCHASE COVERING YOUR LIMITED WARRANTY. LIMITED
WARRANTY IS VOID WITHOUT SUCH PROOF OF PURCHASE.
Phædrus Audio's Limited Warranty
Warranty service conditions are subject to change without notice. For the latest warranty terms and conditions and
additional information regarding Phædrus Audio limited warranty, please see complete details online at www.phaedrus-
audio.com.
1
The
Groove Sleuth
preamplifier's RIAA equalisation does not include the
Neumann pole
in the transfer-function of the equaliser. The truth is that the
inclusion of a zero in the playback RIAA de-emphasis at 3.18µS compensates for
pole which never existed in the record equaliser
(see
http://www.pspatialaudio.com/neumann_pole.htm
