Dave Hill Designs RA II

Non-linear Saturation Plugin - exclusively for Pro Tools

Sale ends in:
  • 00


  • 00


  • 00


  • 00


  • Regular price

     Instant Delivery

    Products with the Instant Delivery badge can be delivered to you in seconds after you place your order.

    Manually Processed

    Sent by a human, normally it's very quick! But sometimes it can take up to 24 hours.


    Digital Products

    Digital Products are delivered electronically either via your order status page, or via email.

    No physical product will be shipped to you!

    In most cases, the product you purchase from us is a serial number/license code/activation code to register the product with the manufacturer and download directly from them. This ensures you receive the latest version of products, and the best support when necessary.

    After purchase, your license code and relevant links will appear on your order status page, or they will be sent to you by email.

    For detailed instructions on the registration/download process, you can visit our dedicated page by clicking here: Install Instructions.

Education Proof

Products with education pricing are for students & teachers only. To prove your education status we require that you upload proof in the form of an image/PDF.

Types of proof


Student ID Card, Letter of enrollment, or similar


Teacher ID Card, Lecturer ID Card, Payslip, Letter from the school/college

Education proof is submitted to the manufacturer and is accepted at their discretion.

The Basics

iLok is a copy protection method used by many of our brands.

It has 3 types of activations, iLok USB, iLok Machine, and iLok Cloud.

Different brands/products will offer different iLok methods. iLok USB is always an option, but the availability of iLok Cloud and iLok Machine methods is at the discretion of the software developer.

iLok Account

For all iLok protected products, you will need an iLok account. You can create one for free here: ilok.com/#!registration

iLok License Manager

To manage your iLok licenses, there is a dedicated app called iLok License Manager. This app is used to register, activate, and move your licenses between locations.

You can download the latest installers from the iLok website: ilok.com/#!home

iLok USB Key

iLok USB

This activation is stored on an iLok 2 or 3 USB key.

It is the best option for portability, if you frequently move between multiple machines, and offline use.

iLok Machine ID

Machine ID

This activation is stored locally on your computer.

While this is a convenient way to work offline, and does not require the additional cost of an iLok USB, there is the risk of a license being lost in the case of a drive failure.

This option also requires extra care when you upgrade to a new computer, the license(s) must be deactivated on your old machine first to ensure you do not lose them.

iLok Cloud

iLok Cloud

This activation is based online, and requires a "cloud session" using the iLok License Manager.

It requires an active internet connection for the entire time you use the plugin(s).

RA is a Nonlinear plug-in for the professional Audio Engineers that demand the most from their plug-ins.  The plug-in can be thought of as an amplifier that is being overdriven, (Wave Form Compression), but there is control over what part is being overdriven. An analogy from photography, it is like the curve function.

The controls in RA are divided into 4 groups.

The first and most useful control is the LOW LEVEL control; it is in the middle of the graphic. This control brings up the low-level content of the audio. It may also be thought of as a detail control.  It functions like an amplifier being overdriven, but works more on the low-level part of the signal and less on the high level part. This control generates third harmonic distortion. The LOW LEVEL control can also have a multiplying effect on other plug-ins by increasing their effect.

The LOW LEVEL control is useful on any kind of signal and is a little like upward compression without attack and release times. Try it on a vocal and listen to the dynamic change.

The second control group is the PEAK controls. They are like an adjustable soft clip, or an amplifier where you have control over how it saturates, but leaves the low-level part of the signal alone. The distortion generated by the PEAK controls is third harmonic. The PEAK control rounds off the peaks of the wave shape and has a hardness value that can be changed. The HARDNESS control's soft setting (0) limits the peak to approximately -3dBFS and the hard setting (100) limits peaks to approximately -10dBFS.

An example to try; take a track with a snare drum that peaks in the range of -3dBFS. Set the LOW LEVEL, PEAK and HARDNESS controls to max. Look at the meter, what you should see is a peak reading around -10dBFS but it should be louder with the plug-in engaged as compared to bypass.

RA is also useful in preventing an occasional over.

The next control group generates even harmonic content. These controls are the most difficult to hear and describe. Being that the second harmonic is an octave. In a test, some people did not hear 50% distortion if it is only second harmonic. But it does change the feel of things and can have a thicking effect. The TOP control rounds off the top of the wave shape and the BOTTOM control rounds off the bottom of the wave shape. When used together it is possible to have the even harmonic content cancel and have third harmonic distortion left.

Try one of these in conjunction with the LOW LEVEL control on an acoustic guitar, bass or kick drum.  You may have noticed that on some recorded tracks that the waveshape can have a shift or peaks on only it's top or bottom edge, this is a result of even harmonic content.

The last group has two controls are more like housekeeping. The first control which is in front of the signal processing is a DRIVE control that has a plus and minus 6dB range. Being the distortion generator is level dependent, this will allow for a more or less aggressive operation of the process and the ability to better match the process to the track. The DRIVE control is also unity gain from the input to the output. However, if you have a -1dBFS signal and increase the drive gain to +6dB you will clip and the clip light indicator will turn red.

The last control of the plug-in is an output level trim which has a range of plus and minus 6dB for matching gain. Clipping the signal with the trim control will light the clip light indicator, but the colouring controls cannot clip. The main use of the LEVEL TRIM is for level matching, as the curve bending is very non-linear it is not possible to have a fixed unity gain.

The graphic display shows how the signal is being distorted and is useful in the prediction of what the plug-in will do. The controls are interactive which means each one will affect the process in front of it. Think of the curve display in a graphics program.

Crossgrade Proof

This crossgrade is for owners of a competing DAW. To prove your DAW ownership, we require that you upload proof in the form of an image/PDF.

Types of proof

A copy of your purchase receipt for the original license or the most recent update/upgrade

A screenshot of your product registration

A photo of your package (either CD/DVD or printed manual), with the unique serial number included in the photo.