APX 351 - The Holy Grail Tube Pre-Amp Plugin

APX 351

The Holy Grail Tube Pre-Amp

VST3 · AU · AAX

WIN - MacOS | Apple Silicon / Intel / AMD

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Demo (MacOS) Demo (WIN)

* License Authorization needs an internet connection

Audio & Video Demos

Topology

Single-Channel Tube Preamp Emulation

▸ Single-channel tube preamp emulation

▸ Class-A gain stage with transformer-coupled input/output

▸ Neural-modeled triode saturation for authentic harmonic coloration

▸ Subtle tape-era frequency roll-off and midrange lift

▸ Natural soft clipping at high input levels

▸ High-impedance input suited for instruments, vocals, or mix busses

Warm. Musical. Legendary.

Uses

Add warmth and vintage character to vocals, guitars, and synths

Drive harder for tube-style saturation and grit on drums or bass

Smooth transient peaks without traditional compression

Glue mix elements together with subtle harmonic thickening

Enhance sampled instruments or sterile digital sources with analog flavor

Insert on the mix bus for cohesive, retro-inspired depth and tone

NM2

Ultra-X Mode

Ultra-X mode for very high sample rate models which minimizes aliasing artifacts at extreme settings. This plugin features a high sample rate training model set for virtually removing artifacts.

▪ NM2 Neural Technology

▪ 192kHz Ultra-High Resolution

▪ Minimized Aliasing at Extreme Settings

Features & Controls

Control the input gain / drive to the valve processing

This is the control for output attenuation after the valve processing.

Automatic gain compensation to maintain consistent levels as you adjust the drive control.

Choose from soft and hard models captured for light or driven model of saturation.

Use this control to further adjust the input signal gain before processing.

Use this control to trim the final output of the processing after the filters and the dry mix.

Add the original unprocessed signal to the mix as parallel processing.

This filter is applied post processing to control some of the upper harmonics if needed by the user. The range is 2kHz to 20kHz.

This filter is applied pre processing to control some of the low end if needed by the user. The range is 20Hz to 2kHz.

Ultra-X mode for very high sample rate models which minimizes aliasing artifacts at extreme settings.

What Producers Say

Congrats to the ToneEmpire Team! This one sounds amazing. Sweet what it does to the transients and the stereo image. I tried it on the drum bus and the mix bus = instant Hi-Fi sound. Love it!

@mando3022

Sounds nice, the gain also is very close good work there. When gain match is just volume up and volume down the same amount it never really works, the scaling you have here is just perfect. Softube has a match system that requires u click a button and it takes second and matches the gain. but this is that much faster :-)

@Sebastianandthedeepbluemusic

Ok now I have demoed this preamp on an electric guitar and I actually like it! A lot more presence and 3D.

@michaelwirth6843

Technical Specifications

Plugin Formats

MAC OSX: VST3/AU/AAX – 64bit

WINDOWS: VST3/AAX – 64 bit

Windows 10 or later

MacOS Mojave or later

Apple Silicon / Intel / AMD Native

System Requirements

Intel i3 / AMD Ryzen or equivalent

2 GB RAM minimum

300 MB HD space

VST3, AU, or AAX 64-bit host

Internet connection for license activation

Installation

OSX: Download the apx351.pkg file, double-click and follow instructions

Windows: Download apx351.exe and follow instructions

Online license registration system

Compatible with all major DAWs