TONE3000

Vox UL730 (LiveSPICE2NAM)

Amp Head Capture

NAM

83ennui's avatar

83ennui

1 month ago

Description

Vox UL730. Famously known as the amp used in The Beatles' "Revolver" and "Sgt. Peppers" albums. ・Normal Channel with Mid-freq Shift switch. Doesn't really sound that good on its own with all the bass frequencies, use a high pass filter. ・Vibrato Channel with Mid-freq Shift switch and a Distortion circuit. I don't know why vibrato and tremolo are interchanged in the context of guitars but here we are. The tremolo circuit is unfortunately not emulated. ・Preamp and poweramp sections are also provided separately. [LEGEND] ・FULL - Preamp + poweramp ・PRE - Preamp section ・PWR - Poweramp section ・NOR - Normal channel ・VIB - Vibrato channel ・DST - Distortion ・BST - Boost [NOTES] ・All the models are captured with 8x oversampling and 64 iterations for the highest quality possible. ・All controls are flat so you can hear the amp as it is with neutral settings. I may add additional captures with "ideal" settings, but that's not a priority for now. ・Should you wish to push more gain into the captures, use a separate gain utility/plugin and a clipper/waveshaper/limiter with a ceiling of -0.1dB or less before your NAM loader to prevent nuking the models if the input signal gets too hot. === First ever NAM captures with Architecture 2. About time I hopped on the bandwagon. A2 has been a significant improvement from its predecessor. I enjoyed the results so much that I decided to make NAM captures of some of my own LiveSPICE schematic files, primarily for convenience and CPU usage - especially with my music "workstation" being an early 2011 13" MacBook Pro as a Linux machine. More to come... === LiveSPICE: https://livespice.org/ Original LiveSPICE .schx schematic file: https://github.com/MARKTHERENCE/LiveSPICE-MK-Circuits

Makes and Models

Vox UL730

Preview

Models

Each model captures the gear at specific knob settings.

A2-FullESR: 0.0023

A2-LiteESR: 0.0056

400 Epochs

Sweep

Captured on

Tone3000 - NAM Captures and IRs

A2-FullESR: 0.0023

A2-LiteESR: 0.0055

400 Epochs

Sweep

Captured on

Tone3000 - NAM Captures and IRs

A2-FullESR: 0.0008

A2-LiteESR: 0.0044

400 Epochs

Sweep

Captured on

Tone3000 - NAM Captures and IRs

A2-FullESR: 0.0007

A2-LiteESR: 0.0045

400 Epochs

Sweep

Captured on

Tone3000 - NAM Captures and IRs

A2-FullESR: 0.0077

A2-LiteESR: 0.0247

400 Epochs

Sweep

Captured on

Tone3000 - NAM Captures and IRs

A2-FullESR: 0.0087

A2-LiteESR: 0.0311

400 Epochs

Sweep

Captured on

Tone3000 - NAM Captures and IRs

A2-FullESR: 0.0027

A2-LiteESR: 0.0059

400 Epochs

Sweep

Captured on

Tone3000 - NAM Captures and IRs

A2-FullESR: 0.003

A2-LiteESR: 0.0062

400 Epochs

Sweep

Captured on

Tone3000 - NAM Captures and IRs

A2-FullESR: 0.0019

A2-LiteESR: 0.0029

400 Epochs

Sweep

Captured on

Tone3000 - NAM Captures and IRs

A2-FullESR: 0.002

A2-LiteESR: 0.0026

400 Epochs

Sweep

Captured on

Tone3000 - NAM Captures and IRs

1 Comment

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83ennui's avatar
83ennuiCreator
(edited)
EDI2: 07/28/2026 Recaptured the Vibrato channel. Should be up to volume with the Normal channel. I also had to experiment with other pickup sounds from DI sources to double-check the distortion circuit. Apparently I got it right way before the previous captures, but I was very worried about the ESR being higher than 0.01. Ultimately, it doesn't matter much unless it's near 0.035. EDIT: 07/15/2026 Adjusted the distortion circuit so that it's more accurate to how the original behaves. Added generic silicon/germanium and 1N4148 diode variants as well for other options. Updated the preamp and full amp captures because I changed a couple of things from the schematic files: - Removed the op amp stages. - Input voltage at 6.3V. This is to introduce less compression when the phase inverter tubes are being pushed with more gain.
0

License: T3K

Users may download and use the data file in software and publish the resulting outputs without royalties or restrictions. However, they may not upload, republish, or distribute the data file without the author's permission.

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