Skip to content
Everything In Music Since 1958
Everything In Music Since 1958

Symetrix 528E Single Channel Voice Processor Microphone Preamp

Original price $0.00 - Original price $0.00
Original price $0.00
$499.00 - $499.00
Current price $499.00
♫ In stock
About Inventory Status

Call or text us at 301-946-8808.

In stock: It is in stock and available to ship or pickup. Apparel must be shipped from another location and is not available for in-store pickup. We can usually ship or have these items available for pickup by the next business day if they don't require inspection, special handling, or setup. Our pickup location is 11151 Veirs Mill Rd. Silver Spring, MD 20902.

📆 Preorder: It is on the way to our warehouse. We can't predict when preorder items will arrive due to current supply chain issues. If you place an order for one of these items someone will contact you to estimate the delivery date.

Out of stock: We don't currently have it available but you're not out of luck yet. We still may be able to get it. If you order one of these items we will contact you with an estimated fulfillment date. You have the option to cancel the order if you change your mind.

Special order: The item is so special that it needs to be custom ordered for you. Some of these items are works of art and have to be made individually. Orders for special order items must be prepaid and we cannot accept cancellations or refunds.

█ Sold out: We don't think we can get this item because it was either discontinued by the manufacturer or was limited in quantity. If you want or need this item call or text us. Sometimes we can help you track down the item through other sources or help you find something similar.

About Item Conditions

Call or text us at 301-946-8808.

New: The item is brand new as received from the manufacturer with a full manufacturer warranty. Instruments such as guitars, snare drums, drum kits, brass and woodwind instruments may be opened for photography and quality control inspection and may not be in a factory sealed box.

Mint or Open Box: The item may have been opened and tested but has been repackaged. The original packaging may have superficial issues but the item itself and any originally included accessories are in perfect, like new condition.

Display Model: These items are so cool that we put them on display in our legendary shop. The condition is brand new as received from the manufacturer with manufacturer warranty. Rest assured, these items undergo a very careful inspection before shipping.

Demo: These items have been on our sales floor for demo purposes and will likely show signs of use. The original packaging may no longer be included, but you can be assured that you are receiving an awesome item and an awesome price.

Used: The item is used. These item may have varying degrees of wear. Please read the description for information about the condition of the item. Used items do not carry a warranty.

B or C Stock: Factory refurbished. These items were purchased from the manufacturer in a refurbished condition. They will show some cosmetic issues, but nothing that would impact performance. Being that these are sealed from the manufacturer, we generally do not open these to photograph the cosmetic issues. They are guaranteed to work and may have a limited warranty or you may purchase an extended warranty in some cases. Please see the listing description for item specific information.

Educational & Government Sales Quotes

Click here to inquire about an educational or government quote and discover more about our Educational & Government Sales Division.

Get a Complete Analog Channel Strip with the Symetrix 528E Single Channel Voice Processor Microphone Preamp

This complete analog channel strip performs six separate functions: microphone preamplification, de-essing (sibilance removal), compression/ limiting, downward expansion, parametric EQ, and voice symmetry alignment. All six processes may be used simultaneously. Although we call the 528E a “Voice Processor”, it is perfectly suitable for any mic- or line-level source. Revered as the choice for broadcast voices and known as the classic “one channel console” by recording studios, the 528E delivers all the control you need, without the cost or complication of separate units. Each function has a full complement of controls in an easy-touse layout. The 528E works with any professional microphone. Mic preamp gain is variable up to 60 dB, and 48 volt phantom power is provided for condenser mics. A switchable 15 dB pad reduces gain in front of the mic preamp to prevent distortion in super-close micing situations. A front panel switch selects between microphone or line input. Both inputs are transformerless and are equipped with filters to prevent radio frequency interference (RFI). The de-esser senses and regulates selectable high frequencies to reduce or eliminate annoying sibilance and “lip smacking.” Symetrix’ program-controlled Integrated Dynamics Processing (IDP) techniques combine the best attributes of compressor/limiters and downward expanders. The compressor/ limiter maintains uniform levels while the downward expander eliminates “pumping,” “breathing,” and noise build up. Because it’s program controlled, the 528E’s dynamic range processor responds quickly to transients, and gently to smaller level changes. Separate LED meters display mic/input gain and gain reduction, for quick and accurate adjustment of dynamics functions. The three band parametric EQ performs both creative enhancement and corrective (eliminating resonances and interference) operations, with bandwidth variable from 0.3 octave to 4 octaves, 15 dB boost/cut, and overlapping frequency ranges. A unique “leap frog” topology minimizes the number of amplifiers in the signal path while ensuring that each frequency band interacts with its neighbor in a desirable and musical fashion. The Voice Symmetry switch corrects for excessive positive or negative signal peaks of the human voice. Get the same processing power found in an entire recording studio signal chain with the 528E Voice Processor from Symetrix, the engineering-driven company of signal processing specialists.

  • Single rack space classic analog channel strip. Applications: Broadcast, Studio, Podcasting, Installed Sound.
  • Add warmth and color to your digital broadcasts & recordings.
  • World renowned Symetrix sound quality, reliability and performance.
  • Six (6) processes in one box: Mic Preamp, De-esser, Downward Expander, Compressor, 3-band EQ, and Voice Symmetry.
  • Rear panel patch points allow re-ordering of processes or external effects inserts.


  • Number of Channels
    • Single
  • Inputs
    • 1 x XLR Microphone
    • 1 x XLR Line
    • Each section of the unit has input and output points on 1/4" TRS unbalanced connectors
  • Outputs
    • 1 x XLR
    • 1 x 1/4" TRS phone
    • 1 x 1/4" TRS unbalanced mic pre out
  • Frequency Response
    • 20Hz to 20kHz (+0, -0.5dB) EQ out
  • Noise
    • EIN: -126dBV
  • Preamp
    • Gain Range: 22dB to 60dB
    • Maximum Output: Not specified by manufacturer
    • Input Impedance: 10 kohm
    • Phantom Power: +48V
  • Compressor
    • Threshold Range: -40 to +20dBu
    • Ratio: 1:1 to 10:1
    • Attack Time: Program dependent
    • Release Time: Program dependent
    • Slope: Program dependent
    • Sidechain: Yes
  • Equalizer
    • Filter Type: Three band parametric
    • Frequency Bands: Low: 16Hz to 500Hz, Mid: 160Hz to 6.3kHz, High: 680Hz to 22kHz
    • Bandwidth: 0.3 to 4 octaves, measured at maximum boost
    • Range (Boost/Cut): +/-15dB
  • Light Indication
    • Threshold Range: Not applicable
    • Ratio: Not applicable
    • Attack Time: Not applicable
  • De-Esser
    • Threshold Range: -30 to 0dBu
    • Frequency Range: 800Hz to 8kHz
  • Gate
    • Gate Threshold: Not applicable
    • Gate Rate: Not applicable
  • Physical
    • Dimensions: 19" x 7 1/4" x 1 3/4"
    • Weight: 7.6 lbs
  • Specialties
    • The 528E delivers the same processing power found in an entire recording studio signal chain

Manufacturer: Symetrix
Model: 528E
SKU: I076284-N-1-WHXX

We are Chuck Levin's Washington Music Center

Maryland, Virginia, and Washington DC's legendary music shop. Family-owned and operated since 1958. Buy gear the way it was meant to be bought, from a store that's been there through it all and has the vibe to prove it. We're staffed with musicians and industry experts, people that live and breathe music gear. Our mission is to help you find the right gear for your project, that thing that will bring you the most joy out of what you do. We're an authorized dealer for almost every brand, we stock items the other stores don't, so you can try before you buy. Stop by our Wheaton, MD showroom and see for yourself.

Contact us if you have questions about one of our listings or if you need help finding the right piece of gear.

Free Shipping

Offered for thousands of items when you spend $100+


+1 (301) 946-8808

Get A Quote

Get an educational or government quote

Easy Returns

Learn about returns.