} Heritage Audio Symph EQ Stereo Asymptotic Shelving Equalizer with M-S — Pro Audio Reserve
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Heritage Audio Symph EQ Stereo Asymptotic Shelving Equalizer with M-S Processing

$1,799.00
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Description



Heritage Audio Symph EQ Overview

 

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Heritage Audio Symph EQ stereo shelving equalizer front panel

Your Master Bus Has Been Waiting for This

Drop the Symph EQ across your master bus and you'll immediately understand what mastering engineers mean when they talk about "air" and "weight." This isn't heavy-handed EQ — it's surgical tonal shaping that opens up your highs and tightens your lows without leaving a fingerprint on your mix.

Asymptotic shelf curves keep ultra-highs and sub-lows naturally controlled as boost and cut values climb, delivering a sound that's tight, sweet, and remarkably phase-coherent. Carnhill input and output transformers and a 73-type Class A output stage ensure every signal that passes through leaves richer than it arrived.

As an authorized dealer, Pro Audio Reserve ensures your Symph EQ is a genuine Heritage Audio product backed by full manufacturer warranty and support.

 Heritage Audio Symph EQ rackmount mastering equalizer

M-S Processing That Changes How You Mix

Here's where the Symph EQ separates itself from every other shelving EQ on the market. Switch into M-S mode and you can brighten hard-panned elements without touching your vocals, or tighten up stereo bass content without making your kick or bass guitar feel thin. Processing the center and sides independently isn't just a feature — it's a completely different way of working.

In M-S mode, the side high-pass filter takes on an elliptical response modeled after the filters used in vintage disk cutting lathes — precise, musical, and exactly what your sides need to sit right in the mix. This is mastering-grade control in a 1U box.

 Heritage Audio Symph EQ rear panel XLR I/O connections

0.5dB Precision — Because Every Half Decibel Matters

At the mastering stage, the difference between a good decision and a great one is often less than a decibel. That's why every control on the Symph EQ uses high-quality rotary switches with 0.5dB resolution — six high-shelf frequencies from 8kHz to 24kHz, six low-shelf frequencies from 20Hz to 470Hz, and up to ±10.5dB of boost or cut with total repeatability.

Balanced, ground-free I/O on gold-plated XLR connectors, hard bypass per channel, and stereo or M-S operation selectable on the fly. Everything you need, nothing you don't.

Highlights

  • Stereo asymptotic shelving EQ with near-zero phase deviation — optimized for mastering
  • Built-in M-S processing for independent center and side channel equalization
  • Elliptical side high-pass filter in M-S mode, modeled after vintage disk cutting lathes
  • 0.5dB precision rotary switches with ±10.5dB boost/cut range across six selectable frequencies per band
  • Carnhill input and output transformers with 73-type Class A output stage

Technical Specifications

Specification Details
Type Solid State Stereo Shelving EQ
Channels 2 (Stereo / M-S)
Bands 2 (High Shelf, Low Shelf)
Boost/Cut Range ±10.5dB in 0.5dB steps
High Shelf Frequencies 8, 10, 12, 15, 20, 24 kHz
Low Shelf Frequencies 20, 60, 110, 220, 360, 470 Hz
High Pass Filter Yes (elliptical in M-S mode)
Frequency Response 15Hz – 30kHz (±0.5dB)
Inputs 2 x XLR (L/R), balanced, ground-free
Outputs 2 x XLR (L/R), gold-plated
Bypass Hard bypass per channel
Rack Spaces 1U
Power Source External power supply (included)
Dimensions 1.75" H x 19" W
Manufacturer Part Number SYMPH EQ

What's in the Box

Included Items
Heritage Audio Symph EQ Stereo Shelving Equalizer
External Power Supply
User Documentation
Shipping

Shipping & Returns

  • We deliver all US orders in 3–5 business days
  • Free cancellations
  • Returns accepted within 30 days (unused items)

Order Confirmation

Once your order is placed, you will receive an order confirmation email. This confirms that we have received your order and have pre-authorized your credit card for the purchase. After confirming availability with our suppliers, we will proceed accordingly:

  • If your item is available and ready to ship within 1–2 business days, we will process the charge and arrange for shipment.

  • If your item is on backorder or unavailable, the pre-authorization will be voided and you will be notified by email.

  • Please note: While most items ship out within 1–2 business days, total delivery time is typically 3–5 business days, depending on your location and carrier handling.

Order Shipment

If your item is in stock and your payment has been processed, your order will typically ship within 1–2 business days. Total delivery time is approximately 3–5 business days from the date of order. Once shipped, you will receive tracking information at the email address provided during checkout within 24 hours of dispatch.

If you have not received tracking information within 3–5 business days of placing your order, please contact us at support@proaudioreserve.com.

The Distributor-Direct Advantage

To ensure you receive the most recent hardware revisions and 100% factory-sealed units, Pro Audio Reserve utilizes a Distributor-Direct fulfillment model. Unlike big-box retailers that may ship "floor models" or gear that has been sitting in general-purpose warehouses, your equipment is pulled directly from the primary manufacturer hub, serialized, and dispatched. This process ensures the highest level of quality control for professional-grade recording equipment.

Shipping Policy

We currently offer free shipping within the United States only. If the checkout process on our website allows you to enter a shipping address and complete your order, your location is eligible to receive delivery.

Changing Shipping Address

If you need to change your shipping address after your order has been processed or shipped, we will do our best to accommodate the request. Please note that address changes may result in delivery delays. Any additional costs incurred due to address changes, including carrier fees or rerouting charges will be the responsibility of the customer. No exceptions.

Shipping Times

All shipping times provided are estimates and should not be considered guarantees. Most orders ship out within 1–2 business days from the time payment is processed. However, total delivery time is typically 3–5 business days, depending on your location, carrier performance, and supplier fulfillment timelines.

We work closely with our vendors to ensure timely deliveries, but please note that supply chain disruptions, high-demand periods, or weather events may occasionally cause delays beyond our control.

  • To avoid misunderstandings: The “shipping time” refers to the total time from order placement to final delivery, not just when the item leaves the warehouse.

  • Cancellations: If you choose to cancel your order because it has not arrived within the estimated delivery window, you may be responsible for applicable shipping charges, restocking fees, warehouse handling costs, and other related fees.

  • Chargebacks: Customers who initiate chargebacks due to shipping delays without contacting us first may be held legally responsible for losses. We strongly encourage open communication so we can resolve any delivery concerns directly and efficiently via our Atlanta-based support team.

Delivery Options

  • Threshold Shipping: Your item will be delivered to your front door, porch, garage, or a covered entryway.

 

Why Buy From Us

We get it. You've got a lot of choice when it comes to online retailers.
Here's why we think you should shop with us at ProAudioReserve.

  • Free Shipping USA wide. 
  • 30 Day Easy Returns. Not happy with your product, we'll take it back noquestions asked.
  • Great Service. We pride ourselves on the best service, anywhere.

Reviews

Customer Reviews

Be the first to write a review
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Description



Heritage Audio Symph EQ Overview

 

{% endif %}

Heritage Audio Symph EQ stereo shelving equalizer front panel

Your Master Bus Has Been Waiting for This

Drop the Symph EQ across your master bus and you'll immediately understand what mastering engineers mean when they talk about "air" and "weight." This isn't heavy-handed EQ — it's surgical tonal shaping that opens up your highs and tightens your lows without leaving a fingerprint on your mix.

Asymptotic shelf curves keep ultra-highs and sub-lows naturally controlled as boost and cut values climb, delivering a sound that's tight, sweet, and remarkably phase-coherent. Carnhill input and output transformers and a 73-type Class A output stage ensure every signal that passes through leaves richer than it arrived.

As an authorized dealer, Pro Audio Reserve ensures your Symph EQ is a genuine Heritage Audio product backed by full manufacturer warranty and support.

 Heritage Audio Symph EQ rackmount mastering equalizer

M-S Processing That Changes How You Mix

Here's where the Symph EQ separates itself from every other shelving EQ on the market. Switch into M-S mode and you can brighten hard-panned elements without touching your vocals, or tighten up stereo bass content without making your kick or bass guitar feel thin. Processing the center and sides independently isn't just a feature — it's a completely different way of working.

In M-S mode, the side high-pass filter takes on an elliptical response modeled after the filters used in vintage disk cutting lathes — precise, musical, and exactly what your sides need to sit right in the mix. This is mastering-grade control in a 1U box.

 Heritage Audio Symph EQ rear panel XLR I/O connections

0.5dB Precision — Because Every Half Decibel Matters

At the mastering stage, the difference between a good decision and a great one is often less than a decibel. That's why every control on the Symph EQ uses high-quality rotary switches with 0.5dB resolution — six high-shelf frequencies from 8kHz to 24kHz, six low-shelf frequencies from 20Hz to 470Hz, and up to ±10.5dB of boost or cut with total repeatability.

Balanced, ground-free I/O on gold-plated XLR connectors, hard bypass per channel, and stereo or M-S operation selectable on the fly. Everything you need, nothing you don't.

Highlights

  • Stereo asymptotic shelving EQ with near-zero phase deviation — optimized for mastering
  • Built-in M-S processing for independent center and side channel equalization
  • Elliptical side high-pass filter in M-S mode, modeled after vintage disk cutting lathes
  • 0.5dB precision rotary switches with ±10.5dB boost/cut range across six selectable frequencies per band
  • Carnhill input and output transformers with 73-type Class A output stage

Technical Specifications

Specification Details
Type Solid State Stereo Shelving EQ
Channels 2 (Stereo / M-S)
Bands 2 (High Shelf, Low Shelf)
Boost/Cut Range ±10.5dB in 0.5dB steps
High Shelf Frequencies 8, 10, 12, 15, 20, 24 kHz
Low Shelf Frequencies 20, 60, 110, 220, 360, 470 Hz
High Pass Filter Yes (elliptical in M-S mode)
Frequency Response 15Hz – 30kHz (±0.5dB)
Inputs 2 x XLR (L/R), balanced, ground-free
Outputs 2 x XLR (L/R), gold-plated
Bypass Hard bypass per channel
Rack Spaces 1U
Power Source External power supply (included)
Dimensions 1.75" H x 19" W
Manufacturer Part Number SYMPH EQ

What's in the Box

Included Items
Heritage Audio Symph EQ Stereo Shelving Equalizer
External Power Supply
User Documentation
Shipping

Shipping & Returns

  • We deliver all US orders in 3–5 business days
  • Free cancellations
  • Returns accepted within 30 days (unused items)

Order Confirmation

Once your order is placed, you will receive an order confirmation email. This confirms that we have received your order and have pre-authorized your credit card for the purchase. After confirming availability with our suppliers, we will proceed accordingly:

  • If your item is available and ready to ship within 1–2 business days, we will process the charge and arrange for shipment.

  • If your item is on backorder or unavailable, the pre-authorization will be voided and you will be notified by email.

  • Please note: While most items ship out within 1–2 business days, total delivery time is typically 3–5 business days, depending on your location and carrier handling.

Order Shipment

If your item is in stock and your payment has been processed, your order will typically ship within 1–2 business days. Total delivery time is approximately 3–5 business days from the date of order. Once shipped, you will receive tracking information at the email address provided during checkout within 24 hours of dispatch.

If you have not received tracking information within 3–5 business days of placing your order, please contact us at support@proaudioreserve.com.

The Distributor-Direct Advantage

To ensure you receive the most recent hardware revisions and 100% factory-sealed units, Pro Audio Reserve utilizes a Distributor-Direct fulfillment model. Unlike big-box retailers that may ship "floor models" or gear that has been sitting in general-purpose warehouses, your equipment is pulled directly from the primary manufacturer hub, serialized, and dispatched. This process ensures the highest level of quality control for professional-grade recording equipment.

Shipping Policy

We currently offer free shipping within the United States only. If the checkout process on our website allows you to enter a shipping address and complete your order, your location is eligible to receive delivery.

Changing Shipping Address

If you need to change your shipping address after your order has been processed or shipped, we will do our best to accommodate the request. Please note that address changes may result in delivery delays. Any additional costs incurred due to address changes, including carrier fees or rerouting charges will be the responsibility of the customer. No exceptions.

Shipping Times

All shipping times provided are estimates and should not be considered guarantees. Most orders ship out within 1–2 business days from the time payment is processed. However, total delivery time is typically 3–5 business days, depending on your location, carrier performance, and supplier fulfillment timelines.

We work closely with our vendors to ensure timely deliveries, but please note that supply chain disruptions, high-demand periods, or weather events may occasionally cause delays beyond our control.

  • To avoid misunderstandings: The “shipping time” refers to the total time from order placement to final delivery, not just when the item leaves the warehouse.

  • Cancellations: If you choose to cancel your order because it has not arrived within the estimated delivery window, you may be responsible for applicable shipping charges, restocking fees, warehouse handling costs, and other related fees.

  • Chargebacks: Customers who initiate chargebacks due to shipping delays without contacting us first may be held legally responsible for losses. We strongly encourage open communication so we can resolve any delivery concerns directly and efficiently via our Atlanta-based support team.

Delivery Options

  • Threshold Shipping: Your item will be delivered to your front door, porch, garage, or a covered entryway.

 

Why Buy From Us

We get it. You've got a lot of choice when it comes to online retailers.
Here's why we think you should shop with us at ProAudioReserve.

  • Free Shipping USA wide. 
  • 30 Day Easy Returns. Not happy with your product, we'll take it back noquestions asked.
  • Great Service. We pride ourselves on the best service, anywhere.

Reviews

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)