MODWRIGHT LS 36.5 TUBE PREAMPLIFIER WITH PS36.5 POWER SUPPLY

The LS 36.5 represents ModWright’s finest tube linestage performance, offering true balanced outputs and XLR inputs.

It follows our SE tube linestage, the SWL 9.0SE, offering a higher level of performance, aesthetics and options.

Remote volume control are standard, as is phase switching, also via remote!

The LS 36.5 takes sonic performance to the next level, offering a broader and deeper soundstage and a weightier presentation, compared to the 9.0SE.

Refinements in power supply design, voltage regulation, and driver circuit design all serve to raise the bar. Refinements in grounding, transformer coupling and shielding also yield a 2 x lower noise floor than its SE predecessor!

Those wishing to take the performance of the LS 36.5 to the next level again, have the option of adding the PS 36.5 dual-mono, all-tube external power supply. This PS 36.5 features a complete dual-mono topology, including dual tube rectifiers and tube voltage regulation circuitry.

Features:

• One set of XLR inputs
• Four sets of RCA inputs
• Two sets of RCA Main Outputs
• One set of RCA Tape Outputs
• One set of XLR balanced outputs
• Front Panel controls include: Power, Input Select and Mute, Phase (also on remote), HT/BP
• (Home Theater Bypass) and volume control (also on remote)
• Custom MWI remote control for volume, phase and mute

Technical Specs

• Dimensions: 17-1/2“W x 12-1/2“D x 4-3/4“H
  Weight: 27 lbs. (30 lbs. shipped)
  Tube complement: (2) 6H30 Russian Super Tubes, (1) 5AR4 rectifier
  Tube rectified power supply
  Gain: ~12dB
  Input Impedance: 50Kohm
  Output Impedance: 110ohm
  Frequency Response 20Hz-100Khz +/-1dB
  Noise Level: -125dB
  Choke loaded power supply
  Discrete Constant Current Sourced B+ regulators
  DC heaters
  Gain Stage: Pure Class A, cathode bias ‘Mu’ gain/buffer stage with zero feedback
  Power sequence: Mute delay turn on sequence with soft start for improved tube life
  Volume Control: remote control Alps motorized volume control

Recommended Tube Upgrades for the LS 36.5:

• LS36.5 Rectifier Tube: Mullard, Amperex or Phillips ‘GZ34’

PS 36.5 POWER SUPPLY

The PS 36.5 Power Supply is an outboard, dual-mono power supply that can be added to an existing LS 36.5 linestage. Combining dual discrete tube voltage rectification and all tube voltage regulation stages along with removing the power supply from the main chassis takes the sound of the 36.5 to another level of excellence. There is an increase in separation, weight, and resolution that has to be experienced to be believed.

Six tubes are used in the PS 36.5: (2) 6H30 triodes for signal gain and buffering, (2) 6EA7/6EM7 triodes for voltage regulation and (2) 5AR4 (and equivalent, including 5U4) for rectification, making this power supply a true dual mono design.

Existing LS 36.5 units can be upgraded or the two box preamplifier can be ordered as a LS 36.5 DM.

We feel this new upgrade offers a substantial breakthrough in value and performance. The PS 36.5 is styled to match the LS 36.5 and rectifier tubes are exposed to allow ease of tube replacement.

Recommended Tube Upgrades for the PS 36.5 DM:

• PS36.5 Rectifier Tube: GZ34, 5AR4, 5U4G, 5U4GB, 5V4, 5V4GB