SYNERGY RD Preamp Module

British flavored preamp module

Two distinct shades of British gain. Two identical, fully independent channels. One remarkably flexible all-tube module.

Some amplifier designs are recognized as much by their sound as by their unmistakable color. The Synergy RD module captures two of the most revered British high-gain voices ever created, delivering everything from muscular rock crunch to thick, saturated modern gain.

Designed for Synergy’s all-tube modular preamp system, the RD features two identical channels, each capable of delivering two distinct British gain personalities. Whether you’re chasing articulate hard rock rhythm tones, crushing modern metal, or soaring lead sounds, the RD delivers the signature grind, punch, and harmonic richness that have made these circuits favorites on stages and in studios around the world.

Like every Synergy module, the RD is engineered to capture not only the tone, but the feel, touch sensitivity and responsiveness that inspire players every time they plug in.

Rock and dark British voices

In ROCK mode, the RD delivers the instantly recognizable voice of a modern British rock amplifier - tight, aggressive and remarkably articulate. From thick classic rock crunch to singing lead tones, it offers exceptional note definition while retaining the bold midrange punch and authority that have made this style of amplifier a modern favorite.

In DARK mode the RD transforms into an entirely different beast. The gain structure becomes thicker, darker and more saturated, with a heavier low end and a more compressed feel that’s equally at home delivering crushing rhythm tones, doom-inspired textures and fluid, sustaining lead tones.

Each channel features a three-position Bright switch, allowing you to fine-tune the high-frequency response. Whether you need extra bite, a smoother response or something in between, the Bright switch makes dialing in the perfect top end quick and intuitive.

Independent Gain, Bass, Middle, Treble and Volume controls on both channels provide complete tonal flexibility. Because each channel is completely independent, the RD can function like two amplifiers in one. Dial in complementary rhythm and lead sounds, create vintage and modern variations of the same voice or build entirely different gain structures that are instantly available at the flip of a switch.

Cathode select function

The input tube's cathode circuit determines how much low end reaches the gain stages.

• Position 1 - 1.5K resistor, 22uf capacitor. The fullest and loosest. The entire low end reaches the gain stages for maximum weight, a softer attack, and more bloom under saturation.
• Position 2 - 2.7K resistor, .68uf capacitor. The tightest and most focused. Low end is trimmed before the gain stages, firming up the pick attack and keeping palm mutes articulate at high gain. Factory setting.
• Position 3 - 1.8K resistor, 1uf capacitor. The middle ground. More body than position 2, without the looseness of position 1.

There is no wrong answer. Try all three and use the one that feels best under your hands.

Technical Details

• Two identical channels
• Two selectable voicings per channel: ROCK and DARK
• Three-position Bright switch on each channel
• Three-position Cathode Select switch for input tube response
• Independent Gain, Bass, Middle, Treble,and Volume controls for each channel
• Configure each channel independently for rhythm and lead sounds
• 2 x 12AX7 preamp tubes ensure rich harmonic performance
• Compatible with all Synergy preamp docks, SYN Series amplifiers and modular preamp systems

  Synergy hardware and interchangeable preamps are protected under US patent.

Warranty & Returns

All New products are covered by the manufacturers new warranty. Please check their website for the length of warranty and warranty conditions. If an item you receive is faulty get in touch with us ASAP. Second Hand products come with a 4 week warranty from us. If there is an issue let us know ASAP! This covers normal use and does not cover accidental damage, misuse, wrong power plugged into it, modding, water damage or any other damage caused by mistreatment. Just treat it nice and all will be good!

Shipping

We send A LOT of packages every week so don't worry about the shipping side of things!

We've never lost a thing and your awesome new gear will be packed up really well to avoid any damage in transit.

If your order comes in before 2pm we will ship it same day. Most of the time we pack things up all the way to 4pm so just call if you need it to leave same day after 2pm.

We ship mainly with Australia Post but may use a courier depending on location and size of the package.

Free Post ships with Australia Post standard and expected shipping times are between 4-6 business days depending on location. It will be longer to outside of metro and rural areas.

Express Post will usually be with you next business day in metro areas of QLD, NSW, SA, VIC and TAS. WA will take 2 days to metro and extra days after that to out side metro and rural areas.

Everything we ship has a tracking number with the exception of some power cables and smaller envelope packages. You will be emailed tracking once your order has been shipped!

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