} Warm Audio WA273 2-Channel Mic Preamp — Pro Audio Reserve
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Warm Audio WA273 2-Channel Mic Preamp

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$1,299.00
$1,199.00
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What's Included With Every Purchase
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Personal Rig-Check $147 FREE
We review your mic, OS, and signal chain before your gear ships — and confirm everything works together.
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Studio Blueprint $197 FREE
Your personalized setup guide — exact connections, gain settings, and driver steps for your specific configuration.
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Upgrade Path Roadmap $97 FREE
What to add next and in what order — so you never overbuy or back yourself into a dead end.
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Every recommendation we make is personally verified. If anything doesn't perform as confirmed within 90 days, including driver conflicts, gain issues, or compatibility problems, contact us directly. We fix it. No runaround, no forums. A real person responds.
Total included support value:
$441 Included Free With Your Purchase
Description

Warm Audio WA273 Overview

  Warm Audio WA273 2-channel microphone preamp front panel

Classic British Console Tone, Refined for Modern Studios

The WA273 is built around the sound engineers have chased for decades. Its transformer-balanced signal path delivers weight and presence that works beautifully on vocals, drums, guitars, and bass. Push the input stage and pull back the output for added saturation, or keep it clean for confident, open recordings.

Having two matched channels makes it ideal for stereo sources, drum overheads, keys, and bus processing when you want cohesive color across a pair of tracks.

 Warm Audio WA273 gain controls impedance switches and meters

Flexible Gain Staging and Mic Optimization

With up to 80dB of gain available, the WA273 handles everything from whisper-quiet ribbon mics to hot condenser signals. Resistor-stepped rotary gain switches make recall simple, while the output level controls let you fine-tune how hard you drive the circuit.

Switchable input impedance allows you to optimize the response of different microphones or subtly shift the tone to better suit the source.

 Warm Audio WA273 rear panel inputs outputs and inserts

A Serious Front End for Any Recording Chain

The WA273 includes mic, line, and DI inputs on each channel, along with inserts for integrating compressors or EQs directly into your signal path. Polarity switches, phantom power, and inductor-based highpass filters give you practical control during tracking.

Whether you are recording a full band or shaping individual sources, the Warm Audio WA273 quickly becomes a trusted centerpiece in the rack.

Key Highlights

  • Two-channel 1073-style mic, line, and instrument preamp
  • Fully discrete Class A, transformer-balanced circuitry
  • UK-made Carnhill input and output transformers
  • Up to 80dB of gain for ribbons, dynamics, and condensers
  • Switchable impedance and inductor-based highpass filters
  • Rugged 1U rackmount design with internal power supply

If you are building a high-quality front end, explore more options in our microphone preamps collection

Warm Audio WA273 Specifications

Specification Details
Preamp Type Class A Solid State
Number of Channels 2
Phantom Power Yes
Polarity Switch Yes
EQ Highpass 50Hz, 80Hz, 160Hz, 300Hz
Analog Inputs 2 x XLR (mic), 2 x 1/4" (line), 2 x 1/4" (Hi-Z)
Analog Outputs 2 x XLR, 2 x 1/4"
Channel Inserts Yes
Frequency Response 20Hz-20kHz (±0.5 dB)
Rack Spaces 1U
Manufacturer Part Number WA273

What’s in the Box

Included Items
Warm Audio WA273 2-channel microphone preamp
IEC power cable
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

Warm Audio WA273 Overview

  Warm Audio WA273 2-channel microphone preamp front panel

Classic British Console Tone, Refined for Modern Studios

The WA273 is built around the sound engineers have chased for decades. Its transformer-balanced signal path delivers weight and presence that works beautifully on vocals, drums, guitars, and bass. Push the input stage and pull back the output for added saturation, or keep it clean for confident, open recordings.

Having two matched channels makes it ideal for stereo sources, drum overheads, keys, and bus processing when you want cohesive color across a pair of tracks.

 Warm Audio WA273 gain controls impedance switches and meters

Flexible Gain Staging and Mic Optimization

With up to 80dB of gain available, the WA273 handles everything from whisper-quiet ribbon mics to hot condenser signals. Resistor-stepped rotary gain switches make recall simple, while the output level controls let you fine-tune how hard you drive the circuit.

Switchable input impedance allows you to optimize the response of different microphones or subtly shift the tone to better suit the source.

 Warm Audio WA273 rear panel inputs outputs and inserts

A Serious Front End for Any Recording Chain

The WA273 includes mic, line, and DI inputs on each channel, along with inserts for integrating compressors or EQs directly into your signal path. Polarity switches, phantom power, and inductor-based highpass filters give you practical control during tracking.

Whether you are recording a full band or shaping individual sources, the Warm Audio WA273 quickly becomes a trusted centerpiece in the rack.

Key Highlights

  • Two-channel 1073-style mic, line, and instrument preamp
  • Fully discrete Class A, transformer-balanced circuitry
  • UK-made Carnhill input and output transformers
  • Up to 80dB of gain for ribbons, dynamics, and condensers
  • Switchable impedance and inductor-based highpass filters
  • Rugged 1U rackmount design with internal power supply

If you are building a high-quality front end, explore more options in our microphone preamps collection

Warm Audio WA273 Specifications

Specification Details
Preamp Type Class A Solid State
Number of Channels 2
Phantom Power Yes
Polarity Switch Yes
EQ Highpass 50Hz, 80Hz, 160Hz, 300Hz
Analog Inputs 2 x XLR (mic), 2 x 1/4" (line), 2 x 1/4" (Hi-Z)
Analog Outputs 2 x XLR, 2 x 1/4"
Channel Inserts Yes
Frequency Response 20Hz-20kHz (±0.5 dB)
Rack Spaces 1U
Manufacturer Part Number WA273

What’s in the Box

Included Items
Warm Audio WA273 2-channel microphone preamp
IEC power cable
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)