Rupert Neve Designs Portico 543 500-Series Compressor Module


0% Interest for 6 Months**

On Purchases of $199 or more with your Sam Ash credit card. Interest will be charged to your account from the purchase date if the promotional purchase is not paid in full within 6 months. Minimum Monthly Payments Required.

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0% Interest for 6 Months

On select purchases $199 or more with your Sam Ash card now thru 09/23/21.


On Purchases of $199 or more with your Sam Ash credit card.* Interest will be charged to your account from the purchase date if the promotional purchase is not paid in full within 6 months. Minimum Monthly Payments Required. Note: Your first order with your Sam Ash Credit Card can only be shipped to the billing address on your application.


*Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo purchase if you pay the promo purchase amount in full within 6 months. If you do not, interest will be charged on the promo purchase from the purchase date. Depending on purchase amount, promotion length and payment allocation, the required minimum monthly payments may or may not pay off purchase by end of promotional period. Regular account terms apply to non-promotional purchases and, after promotion ends, to promotional balance. For new accounts: Purchase APR is 29.99%; Minimum Interest Charge is $2. Existing cardholders should see their credit card agreement for their applicable terms. Subject to credit approval. We reserve the right to discontinue or alter the terms of this offer at any time.


Qualifying items must be purchased at the advertised tagged prices. This offer is not valid for price matches, competitor coupon matches, used or previously marked down items, closeout gear or door busters.

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The 543 Mono Compressor delivers the same smooth, musical, dynamic control and brick-wall limiting of the Portico 5043 now in a 500-series format.

More on the way - call 800-472-6274 or chat for availability

The Portico 543 from Rupert Neve Designs is a fully controllable compressor-limiter featuring feed-forward / feedback modes, Peak / RMS detection and a built in side chain high pass filter. There's nothing like a Rupert Neve design matched with a great set of features and the 543 combines that amazing warmth, precision and flexibility that only the Neve name could bring you.

Built around Mr. Rupert Neve’s custom transformer designs, each 543 module encompasses individually controllable threshold, attack, release, makeup gain, ratio, side chain HPF, Feed-Forward / Feed-back selection and Peak/RMS detection modes. With the compressor inactive, the 543 may be used as a transformer-coupled, high-performance line amplifier, and two 543 may be linked for stereo operation as well. The chassis is built to standard 500 series specifications, with power and I/O provided by the rack.

Different Control Types
In order to control gain, a VCA or Voltage Controlled Amplifier (or Attenuator) is used. There are many types of  Voltage Control, including the use of tubes, discrete and integrated solid state circuits and naturally non-linear devices, each one having its characteristic behavior that reflects sonically on the final performance, and gives it a character or signature that can be musically attractive or not! Since the VCA's really have no signature of its own, this compressor has very accurate, low noise, low distortion

A part of the audio signal is rectified and smoothed to produce a suitable control voltage for the VCA which has to respond very quickly and have low distortion. If the response is too fast, low frequency signals will themselves, be gain controlled! If the response is too slow, the signal will overshoot and the first few cycles will not get compressed. The speed and accuracy of the response, known as the “attack”, and the time frame that gain remains under the initial control, known as “release” or “recovery” and plays a large part in the way a compressor sounds.

Switchable Modes
The 543 can switch between feed-forward and feed-back modes. If the VCA Control voltage comes from the 543 output, (after the VCA) it cannot act immediately on the VCA because it has already been modified by settings of the VCA and circuits through which it has passed. This is known as a “Feed-Back” compressor. The two compression characteristics are quite different; there is more “Overshoot” and both the attack and recovery ramps are changed, providing the user with powerful choices.

Things You Will Get:

500 Series Module
Model Number 543
Model 543 Comp
Series Portico 500