Creek Audio has always been a fan of the vinyl disc. For those consumers who have an interest
in enjoying this alternative source of high quality music, there are few amplifiers available today
equipped to deal with this as standard. All Creek integrated amplifiers have been designed to
accept plug-in Phono modules to enable vinyl reproduction.

The latest Creek plug-in Phono card options - designated Sequel I- s designed to match a wide
range of MM and MC cartridges and can be fitted to the latest integrated amps from Creek,
namely the Evolution 2, Evolution 5350 and Destiny 2.

The module must be fitted inside the amp, in a slot that will change the Auxiliary Line input into
a Phono input, so either the supplying dealer, or the user, must fit the Phono pre-amp before
it can be used.

The circuitry cannot be switched for MM or MC so the correct module must be chosen to match
the cartridge fitted on the turntable. The Evolution amplifier’s display will automatically show
Disc, when the amp is fitted with the Plug-in module and selected for that input.

At this time there are three Sequel plug in board options

Sequel 40

The Sequel 40 MM Phono pre-amp is the standard device which is suitable for most medium
output moving magnet phono cartridges. It is a two stage circuit and uses high-grade, NE5532
low-noise, integrated circuits to amplify the signal. The 75us RIAA de-emphasis is performed
passively following the first gain stage and is directly coupled without capacitors to block DC,
for a clearer sound.

A separate DC servo circuit blocks DC and rolls-off low frequencies below 1 Hz. There is no
rumble filter in this design. A second gain stage boosts the level up to 40dB and uses active
feedback for 318 and 3180us de-emphasis using high-grade close tolerance components.

The entire circuit is powered from a dedicated supply from the integrated amplifier, but uses
high grade LM317 and LM337 adjustable voltage regulators set for +/-15V operation. This filters
noise from the main amplifier and allows the Phono pre-amp to have the highest possible
overload margin.

Sequel 40 Specification

   * Gain 100 (40 dB)
   * Frequency Response 20 Hz to 20 kHz +/- 0.25 dB
   * Signal to Noise Ratio - 83 dB
   * Total Harmonic Distortion < 0.03%
   * R1AA deviation +/- 0.5%
   * Output 250 mV from 2.5mV input
   * Input Sensitivity / Impedance/ Capacitance - 3.5 mV / 47K Ohm / 220pF
   * Overload Margin 22 dB
   * Suitable for medium to high output MM cartridges in the range of 3.5 mV - 5 mV output

Sequel 48

The Sequel 48 MM Phono pre-amp is the special device which is suitable for low output
moving magnet phono cartridges or high output MC types. It is a two stage circuit and uses
high-grade, Analog Device OP275 low-noise, integrated circuits to amplify the signal. The 75us
RIAA de-emphasis is performed passively following the first gain stage and is directly coupled
without capacitors to block DC, for a clearer sound.

A separate DC servo circuit blocks DC and rolls-off low frequencies below 1 Hz. There is also no
rumble filter in this design. A second gain stage boosts the level up to 40dB and uses active
feedback for 318 and 3180us de-emphasis using high-grade close tolerance components.

The entire circuit is powered from a dedicated supply from the integrated amplifier, but uses
high grade LM317 and LM337 adjustable voltage regulators set for +/-15V operation. This filters
noise from the main amplifier and allows the Phono pre-amp to have the highest possible
overload margin.

Sequel 48Specification

   * Gain 250 (48 dB)
   * Frequency Response 20 Hz to 20 kHz +/- 0.25 dB
   * Signal to Noise Ratio - 83 dB
   * Total Harmonic Distortion < 0.03%
   * R1AA deviation +/- 0.5%
   * Output 250 mV from 1mV input
   * Input Sensitivity / Impedance/ Capacitance - 1 mV / 47K Ohm / 220pF
   * Overload Margin 22 dB
   * Suitable for high output MC or low output MM cartridges in the range of 0.9mV -2 mV output

Sequel 54

The Sequel 54 MC Phono pre-amp is the standard device which is suitable for most medium
output moving coil phono cartridges. It is a two stage circuit and uses high-grade, Analog Devices
OP275 low-noise, integrated circuits to amplify the signal. The 75us RIAA de-emphasis is
performed passively following the first gain stage and is directly coupled without capacitors to
block DC, for a clearer sound.

A separate DC servo circuit blocks DC and rolls-off low frequencies below 1 Hz. There is also
no rumble filter in this design. A second gain stage boosts the level up to 40dB and uses active
feedback for 318 and 3180us de-emphasis using high-grade close tolerance components.

The entire circuit is powered from a dedicated supply from the integrated amplifier, but uses
high grade LM317 and LM337 adjustable voltage regulators set for +/-15V operation. This filters
noise from the main amplifier and allows the Phono pre-amp to have the highest possible
overload margin.

N.B. Due to the very large size of transformer inside the Evolution 5350 and the
magnetic field it generates, it is not advised to use the Sequel 54 as a higher level of
low frequency noise will be heard.

Sequel 54 Specification

   * Gain 500 (54dB)
   * Frequency Response 20 Hz to 20 kHz +/- 0.25 dB
   * Signal to Noise Ratio - 75 dB
   * Total Harmonic Distortion MC < 0.05%
   * R1AA deviation +/- 0.5%
   * Output level 250 mV from 0.5mV input
   * Input Sensitivity / Impedance/ Capacitance - 0.5 mV / 1000 Ohm / 3300 pF
   * Overload Margin MM 22 dB
   * Suitable for medium output cartridges in the range of 0.5 mV - 1 mV output

NOTES

The Sequel Phono pre-amp cannot be fitted to the original Destiny 1 integrated amp, because
the connections on the pre-amp 1 are unique and it had the special Destiny Phono pre-amp
made for it only.

The Sequel Phono modules can be used to enable vinyl input on current and older Creek amplifiers
including the following:
Destiny 2 integrated amp
Evolution 2 integrated amp
Evolution 5350 integrated amp (Excluding Sequel 54)
Classic 5350SE Integrated amp
5350SE, 5350R and 5350 Integrated amps
5250,5250R and 5250SE integrated amps
4330 and 4330SE Integrated amps, but not Mk 2 versions
4240 and 4240SE Integrated amps
P42 Pre-amp

The Sequel Phono modules cannot be used with the following - A50i, A50iR, 4330 Mk2 and
4330SE Mk2. These amps could only be fitted with the earlier version phono plug in cards
which are no longer in production.

Copyright ©  Epoz 2011