Roksan Caspian ROK-DXP SE Phono Preamplifier

The DXP SE is a no compromise MM and MC Reference phono amplifier designed for use in the finest analogue systems. The amplifier's complimentary, fully symmetrical Dual Mono design improves channel separation, distortion, signal to noise ratio and accuracy whilst maintaining the purity and coherence of the audio signal. Using the Artaxerxes.X module, this head amplifier features three switchable cartridge gain settings, one for MM and one for standard output MC cartridges. The third setting is dedicated to Roksan's Shiraz and higher output MC cartridges.

The Artaxerxes.X module is DC powered and has power supply failure protection. Mains power via a high quality mains filter and the 350VA double shielded ultra low noise Toroidal transformer is fed to the Roksan reference state of the art DS1.5 DC module. The DS1.5 in turn provides a stable, noise free low impedance DC power to the Artaxerxes.X phono amplifier module.

Phono amp (Standard DXP)

Using a phono stage based on the Artaxerxes.X reference phono module and housed in the same chassis, our standard phono amplifier is DC powered using a Roksan DSU power supply module and a 30 VA Toroidal transformer.

Silver or Black front panel
High quality Mains inlet filter
350VA ultra low noise, double shielded Toroidal transformer for DXPSE
30VA low noise Toroidal transformer for DXP
DS1.5 reference ultra low noise DC power module for DXPSE
DSU standard low noise DC power module for DXP
Artaxerxes.X reference phono amplifier module
10 ultra low noise regulated power rails for DXPSE (6 low noise for DXP)
MM, MC and higher output MC gain settings (5mV, 0.25mV and 1mV)
Input capacitance setting (47pF and 147pF)
Input resistance setting (10Ω, 100Ω, 1kΩ and 47kΩ)
Over 26dB of headroom


DSU DC Power Module
Output Voltage +26, 0, -26 Vdc
Noise < 150 microvolts (ref. 1Hz - 3 MHz)

DS1.5 Reference DC Power Module
Output Voltage +26, 0, -26 Vdc
Noise < 10 microvolts (ref. 1 Hz - 3 MHz)
Output Impedance < 0.01 Ohm (ref. 20 Hz - 20 kHz)

ARTAXERXES.X Reference Phono Module
Gain Settings MM 40dB @ 1kHz
MC1 54dB @ 1kHz
MC2 60dB @ 1kHz
S/N Ratio MM > 88dB AWTD (ref. 5.0 mV)
MC1 > 84dB AWTD (ref. 1.0 mV)
MC2 > 80dB AWTD (ref. 0.25 mV)
Frequency Response 20Hz - 30kHz +/- 0.2dB
Overload Margin 26dB all settings
THD+N < 0.01%
Output Impedance < 50Ω
Voltage Supply Requires: +26, 0, -26 Vdc (DSU or DS1.5)

ARTAXERXES Standard Phono Module
Gain Settings As Reference Phono Module
S/N Ratio MM > 75dB AWTD (ref. 5.0 mV)
MC1 > 70dB AWTD (ref. 1.0 mV)
MC2 > 65dB AWTD (ref. 0.25 mV)
Frequency Response 20Hz (- 1.0dB) - 30kHz +/- 0.4dB
Overload Margin 26dB all settings
THD+N < 0.01%
Output Impedance < 50Ω
Voltage Supply Requires: +26, 0, -26 Vdc (Internal DSU)