SKU: 31907203022

Modwright Ls 36.5 Tube Preamplifier

Sale price$4131.00 Regular price$4590.00
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Ships within 48 hours · Estimated delivery Aug 26 - Aug 31

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Description

Modwright Ls 36.5 Tube PreamplifierModwright Ls 36. 5 Tube Preamplifier The LS 36. 5 represents ModWrights 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

Modwright Ls 36.5 Tube Preamplifier

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’
    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 31907203022

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    hannah
    West Palm Beach, US
    ★★★★★ 4
    Great lightweight fabric, good design
    Color: Grey Green, Size: Small, Color: Grey Green, Size: Small
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    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 5, 2026
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    NorNev Reviews
    Lowell, US
    ★★★★★ 5
    Great Quality and Look
    Color: Grey Green, Size: Medium
    21st century materials are here to save us! :) M Maelreg does a great job utilizing those materials to the best of their ability. I've really become a fan of just about anything that they make, and this shirt is no exception. It's made from the very popular 88/12 Poly/spandex blend that has become ubiquitous in the fitness/active industry because of its amazing tensile characteristics- wicking, quick dry, UPF, and extra comfy against the skin. You get all of that here and a no-frills, really beautiful color to go along with a fit that is exactly true to size. I took the more form-fitting version for my 5'10" 175 lb. frame (I've found both L and M work from these guys, M for a more tailored look) and it's exactly right- enough room to move around comfortably and breathe, not so tight that it's hugging my belly. It's super lightweight and really easy to launder (I hang dry mine to prevent pilling and wrinkles), cold/low and a medium/low heat iron to rid those stubborn factory wrinkles and you shouldn't ever need to iron it again. Another great offering from the folks at Maelreg.
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    Reviewed in the United States on April 15, 2026
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    Srart86
    Port Orchard, US
    ★★★★★ 5
    Just like the big brands!
    Color: Light Dark Blue Grid, Size: 3X-Large
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    Reviewed in the United States on April 27, 2026
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    John Hayes
    New York, US
    ★★★★★ 5
    Nice pullover
    Color: Brick Heather, Size: Medium
    I really like this. Good quality, fits well and stretchy.
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    Reviewed in the United States on February 11, 2026
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    Michael A.
    Battle Creek, US
    ★★★★★ 5
    Comfortable
    Color: Black Grey Heather, Size: 3X-Large
    Very nice lightweight solution
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    Reviewed in the United States on May 26, 2026

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