} Heritage Audio TT-73 Portable Tabletop 73-Style Mic Preamp — Pro Audio Reserve
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Heritage Audio TT-73 Portable Tabletop 73-Style Mic Preamp

$1,299.00
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Description


Heritage Audio TT-73 Tabletop Preamp Overview

  Heritage Audio TT-73 portable tabletop mic preamp

Single-Channel DMA73 in Portable Tabletop Format

Same 3-stage Class A circuit as Heritage's DMA73 (73-style preamp) in a portable tabletop chassis with carrying handle. 80 dB mic preamp, 50 dB line preamp, genuine B283 gain card. Carnhill input/output transformers. RAF blue-gray steel body with wood end cheeks. 6.65 lbs (3.02 kg). Internal 100–240V PSU engineered to operate near transformers without noise.

High-gain positions show higher impedance — ideal for vintage ribbon mics. HI/LO impedance switch: 1,200 Ω / 300 Ω minimum. Line input 10 kΩ bridging. Max gain >80 dB. Noise <-100 dBu. THD <0.025% @ 1 kHz / <0.05% @ 100 Hz. Max output >+26 dBu into 600 Ω. Output impedance <75 Ω.

 Heritage Audio TT-73 JFET DI thru ground lift onstage hotel

Class A JFET DI With Thru Jack and Ground Lift

Ultra-high-impedance JFET DI (>2 MΩ) on Neutrik 1/4" jack sits before mic input transformer — DI signal passes through Carnhill transformer for classic 73 color. DI thru jack with ground lift switch allows simultaneous hum-free use of instrument amps (send clean signal to TT-73, send amp signal to stage amp). Perfect for bass/guitar direct to FOH at 1073-driven line levels.

80 Hz HPF (18 dB/oct, 3rd-order Bessel, all-discrete Class A). -20 dB pad before input transformer prevents overload on loud sources. Phase reverse. +48V phantom. Marconi-style knobs, vintage engraved push buttons. Frequency response 20 Hz (+0.3 dB) to 20 kHz (-0.2 dB).

 Heritage Audio TT-73 2N3055 output stage portable recording

Road-Ready for Stage, Hotel, Mobile Recording

Built for portability: stage box (bring mics up to line level without long cable runs), FOH DI (musicians deliver 1073 line levels to sound engineers), hotel/tour bus tracking, location recording. Class A single-ended 2N3055-driven high-headroom output stage. Output control allows preamp overdrive for saturation.

Neutrik gold XLRs: mic in, line in, out. As an authorized dealer, Pro Audio Reserve ensures you receive a genuine Heritage Audio product backed by full manufacturer warranty and long-term support.

Highlights

  • Portable tabletop 73-style preamp with carrying handle
  • Single-channel DMA73 circuit: 3-stage Class A, B283 gain card
  • 80 dB mic preamp, 50 dB line preamp
  • Carnhill input and output transformers
  • HI/LO impedance: 1,200 Ω / 300 Ω minimum (higher at high-gain positions)
  • Line input: 10 kΩ bridging
  • Class A JFET DI: >2 MΩ input (before transformer — DI signal passes through Carnhill)
  • DI thru jack with ground lift (simultaneous hum-free amp use)
  • 80 Hz HPF: 18 dB/oct, 3rd-order Bessel, all-discrete Class A
  • -20 dB pad (before input transformer)
  • Phase reverse, +48V phantom
  • 2N3055-driven Class A single-ended output stage
  • Max gain: >80 dB | Max output: >+26 dBu into 600 Ω
  • Noise: <-100 dBu | THD: <0.025% @ 1 kHz / <0.05% @ 100 Hz
  • Output impedance: <75 Ω (factory terminated 600 Ω)
  • Frequency response: 20 Hz (+0.3 dB) to 20 kHz (-0.2 dB)
  • Internal 100–240V PSU (engineered for noise-free operation near transformers)
  • RAF blue-gray steel + wood end cheeks, Marconi-style knobs
  • Weight: 6.65 lbs (3.02 kg)
  • Handmade in Spain

Heritage Audio TT-73 Specifications

Specification Details
Format Portable tabletop with carrying handle
Preamp Type 3-stage Class A, fully discrete, solid state (DMA73 circuit)
Gain Card Genuine B283 gain card (modular construction)
Transformers Carnhill input and output
Mic Preamp Gain Slightly greater than 80 dB
Line Preamp Gain 50 dB
Mic Input Impedance HI: 1,200 Ω minimum | LO: 300 Ω minimum (transformer balanced and floating, higher at high-gain positions)
Line Input Impedance 10 kΩ bridging (transformer balanced and floating)
DI Input Impedance Greater than 2 MΩ (Class A JFET, unbalanced)
DI Circuit Position Before mic input transformer (DI signal passes through Carnhill transformer)
Output Impedance Less than 75 Ω (transformer balanced and floating, factory terminated 600 Ω)
Maximum Output Greater than +26 dBu into 600 Ω
Output Stage Class A single-ended, 2N3055-driven, high headroom
Noise Less than -100 dBu
THD Less than 0.025% @ 1 kHz | Less than 0.05% @ 100 Hz
Frequency Response 20 Hz (+0.3 dB) to 20 kHz (-0.2 dB)
Pad -20 dB (before input transformer)
High-Pass Filter 80 Hz, 18 dB/octave (3rd-order Bessel, all-discrete Class A)
Phantom Power +48V
Phase Reverse Yes (polarity switch)
Analog Inputs 2 x Neutrik gold XLR (mic, line), 1 x Neutrik 1/4" (DI)
Analog Outputs 1 x Neutrik gold XLR, 1 x 1/4" (DI thru with ground lift)
Power Source Internal PSU, 100–240V AC (worldwide voltage, IEC cable)
Weight 6.65 lbs (3.02 kg)
Construction RAF blue-gray steel chassis, wood end cheeks, Marconi-style knobs, vintage engraved push buttons, carrying handle
Manufactured Spain

What's in the Box

Included Items
Heritage Audio TT-73 Portable Tabletop Mic Preamp
IEC Power Cable
User Manual
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

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Description


Heritage Audio TT-73 Tabletop Preamp Overview

  Heritage Audio TT-73 portable tabletop mic preamp

Single-Channel DMA73 in Portable Tabletop Format

Same 3-stage Class A circuit as Heritage's DMA73 (73-style preamp) in a portable tabletop chassis with carrying handle. 80 dB mic preamp, 50 dB line preamp, genuine B283 gain card. Carnhill input/output transformers. RAF blue-gray steel body with wood end cheeks. 6.65 lbs (3.02 kg). Internal 100–240V PSU engineered to operate near transformers without noise.

High-gain positions show higher impedance — ideal for vintage ribbon mics. HI/LO impedance switch: 1,200 Ω / 300 Ω minimum. Line input 10 kΩ bridging. Max gain >80 dB. Noise <-100 dBu. THD <0.025% @ 1 kHz / <0.05% @ 100 Hz. Max output >+26 dBu into 600 Ω. Output impedance <75 Ω.

 Heritage Audio TT-73 JFET DI thru ground lift onstage hotel

Class A JFET DI With Thru Jack and Ground Lift

Ultra-high-impedance JFET DI (>2 MΩ) on Neutrik 1/4" jack sits before mic input transformer — DI signal passes through Carnhill transformer for classic 73 color. DI thru jack with ground lift switch allows simultaneous hum-free use of instrument amps (send clean signal to TT-73, send amp signal to stage amp). Perfect for bass/guitar direct to FOH at 1073-driven line levels.

80 Hz HPF (18 dB/oct, 3rd-order Bessel, all-discrete Class A). -20 dB pad before input transformer prevents overload on loud sources. Phase reverse. +48V phantom. Marconi-style knobs, vintage engraved push buttons. Frequency response 20 Hz (+0.3 dB) to 20 kHz (-0.2 dB).

 Heritage Audio TT-73 2N3055 output stage portable recording

Road-Ready for Stage, Hotel, Mobile Recording

Built for portability: stage box (bring mics up to line level without long cable runs), FOH DI (musicians deliver 1073 line levels to sound engineers), hotel/tour bus tracking, location recording. Class A single-ended 2N3055-driven high-headroom output stage. Output control allows preamp overdrive for saturation.

Neutrik gold XLRs: mic in, line in, out. As an authorized dealer, Pro Audio Reserve ensures you receive a genuine Heritage Audio product backed by full manufacturer warranty and long-term support.

Highlights

  • Portable tabletop 73-style preamp with carrying handle
  • Single-channel DMA73 circuit: 3-stage Class A, B283 gain card
  • 80 dB mic preamp, 50 dB line preamp
  • Carnhill input and output transformers
  • HI/LO impedance: 1,200 Ω / 300 Ω minimum (higher at high-gain positions)
  • Line input: 10 kΩ bridging
  • Class A JFET DI: >2 MΩ input (before transformer — DI signal passes through Carnhill)
  • DI thru jack with ground lift (simultaneous hum-free amp use)
  • 80 Hz HPF: 18 dB/oct, 3rd-order Bessel, all-discrete Class A
  • -20 dB pad (before input transformer)
  • Phase reverse, +48V phantom
  • 2N3055-driven Class A single-ended output stage
  • Max gain: >80 dB | Max output: >+26 dBu into 600 Ω
  • Noise: <-100 dBu | THD: <0.025% @ 1 kHz / <0.05% @ 100 Hz
  • Output impedance: <75 Ω (factory terminated 600 Ω)
  • Frequency response: 20 Hz (+0.3 dB) to 20 kHz (-0.2 dB)
  • Internal 100–240V PSU (engineered for noise-free operation near transformers)
  • RAF blue-gray steel + wood end cheeks, Marconi-style knobs
  • Weight: 6.65 lbs (3.02 kg)
  • Handmade in Spain

Heritage Audio TT-73 Specifications

Specification Details
Format Portable tabletop with carrying handle
Preamp Type 3-stage Class A, fully discrete, solid state (DMA73 circuit)
Gain Card Genuine B283 gain card (modular construction)
Transformers Carnhill input and output
Mic Preamp Gain Slightly greater than 80 dB
Line Preamp Gain 50 dB
Mic Input Impedance HI: 1,200 Ω minimum | LO: 300 Ω minimum (transformer balanced and floating, higher at high-gain positions)
Line Input Impedance 10 kΩ bridging (transformer balanced and floating)
DI Input Impedance Greater than 2 MΩ (Class A JFET, unbalanced)
DI Circuit Position Before mic input transformer (DI signal passes through Carnhill transformer)
Output Impedance Less than 75 Ω (transformer balanced and floating, factory terminated 600 Ω)
Maximum Output Greater than +26 dBu into 600 Ω
Output Stage Class A single-ended, 2N3055-driven, high headroom
Noise Less than -100 dBu
THD Less than 0.025% @ 1 kHz | Less than 0.05% @ 100 Hz
Frequency Response 20 Hz (+0.3 dB) to 20 kHz (-0.2 dB)
Pad -20 dB (before input transformer)
High-Pass Filter 80 Hz, 18 dB/octave (3rd-order Bessel, all-discrete Class A)
Phantom Power +48V
Phase Reverse Yes (polarity switch)
Analog Inputs 2 x Neutrik gold XLR (mic, line), 1 x Neutrik 1/4" (DI)
Analog Outputs 1 x Neutrik gold XLR, 1 x 1/4" (DI thru with ground lift)
Power Source Internal PSU, 100–240V AC (worldwide voltage, IEC cable)
Weight 6.65 lbs (3.02 kg)
Construction RAF blue-gray steel chassis, wood end cheeks, Marconi-style knobs, vintage engraved push buttons, carrying handle
Manufactured Spain

What's in the Box

Included Items
Heritage Audio TT-73 Portable Tabletop Mic Preamp
IEC Power Cable
User Manual
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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(0)
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(0)
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