THD 4 ohm Hot Plate

^# 36

Equipboard's ranking is determined by analyzing factors such as professional artist usage, popularity, user ratings, reviews, and more.

$495.00 Price Tier: Standard

5.0 (2)

1 Review

Find out who is using THD Hot Plate 4 ohm

0 wishlisted

3 saved

Page last updated Jun 19, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated June 19, 2026.

Store

Reviews

Price

5.0 (5)

$495.00 1 available New

$350.00 3 available Used

View Deal

Average Price: $423

Standard/Professional

$299

$600+

Price Tier

In the Guitar Power Attenuators category, THD 4 ohm Hot Plate is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

Budget

Standard

High-end

^* Product prices and availability are updated by Equipboard every 24hrs and are subject to change. Equipboard may receive compensation for purchases made at participating retailers linked on this site. This compensation does not affect what products or prices are displayed, or the order of prices listed. For more information, please refer to our affiliate disclosure.

Description

Edit description

Transform your guitar-playing experience with the THD 4 ohm Hot Plate, a game-changing guitar power attenuator. Designed to let you achieve that cranked-up tube amp tone at lower volumes, the Hot Plate is a must-have for any guitarist looking to maintain their signature sound during practice or smaller gigs. The proprietary reactive load technology ensures that your amplifier's dynamics remain intact, providing an authentic tone without sacrificing quality. This attenuator is specifically optimized for 4 ohm amps, making it perfect for musicians with specific rig requirements.

The Hot Plate offers a user-friendly interface with customizable features. With a built-in Brightness switch, you can enhance the high-frequency response, while the Deep switch adds punch to the low end. Furthermore, the Line Out feature lets you connect directly to a mixer or recording device, providing versatility whether you're on stage or in the studio.

This robust tool is more than just a sound modulator; it’s a gateway to unlocking the full potential of your amplifier's capabilities without disturbing the peace. Guitarists from all genres will appreciate the Hot Plate's ability to keep the integrity of their tone intact, regardless of the venue size.

Key Features:

Optimized for 4 ohm amplifiers
Proprietary reactive load technology
Brightness and Deep switches for tonal shaping
Line Out for direct connection to mixers or recording devices
Maintains amplifier dynamics at lower volumes

Product specs

Brand	THD
Model	Hot Plate Power Attenuator - 4 Ohm
Finish	Black, Red
Year	2010s
Made In	United States
Categories	Amp Attenuators
Color Family	Black
Impedance	4 ohms
Power Handling (Watts)	185

FAQs

What is the primary function of the THD 4 ohm Hot Plate?: The THD 4 ohm Hot Plate is a power attenuator designed to reduce the volume output of a guitar amplifier while maintaining its tone, allowing you to achieve cranked amp sounds at lower volumes.
Is the THD 4 ohm Hot Plate suitable for use with tube amplifiers?: Yes, the THD 4 ohm Hot Plate is specifically designed for use with tube amplifiers, helping to achieve high-gain tones without excessive volume.
How does the THD 4 ohm Hot Plate affect the tone of my amplifier?: The THD 4 ohm Hot Plate uses a reactive load to preserve the tonal characteristics of your amplifier, providing a smoother and more refined sound compared to simple resistive attenuators.
Can I use the THD 4 ohm Hot Plate with any amplifier?: The THD 4 ohm Hot Plate is designed for use with amplifiers that have a 4-ohm output impedance. Ensure your amp matches this specification for optimal performance.
What is the power handling capacity of the THD 4 ohm Hot Plate?: The THD 4 ohm Hot Plate can handle up to 185 watts, making it suitable for use with a wide range of powerful amplifiers.

Videos

Add video

Gen6 ちゃんねる

THD Hot plate test

Gen6 ちゃんねる

Do I need more than one THD Hot Plate Power Attenuator?

Johan Segeborn

THD Hotplate in Depth Review into a 1967 Super Reverb

Fret Junkies

1972 Marshall JMP 50w Cranked with THD Hot Plate

Joong Mo Do

Reviews

Add review

PROS

Enables perfect tone balance before breakup in small venues
Maintains amp's natural sound and response at manageable volumes
Built like a tank, ensuring durability
Provides full control down to bedroom volumes with minimal sound coloring
Bright and deep switches effectively change sound for better customization
Reduces dB without significantly altering amp tone, ideal for home use and front of house

CONS

Loses some headroom and sound quality at -16 ohms
Incompatible with amps over 200 watts, limiting its use with high-powered setups

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about THD 4 ohm Hot Plate.

Setup and maintenance

0 0

The speaker cable length in combos can be restrictive, necessitating a rare speaker extension cable for optimal attenuator positioning.
Source
0 0

It is recommended that attenuators like the THD are rated for double the wattage of the amp to prevent excessive stress on components.
Source
0 0

Owners utilizing the THD Hot Plate report the importance of experimenting with input and channel jumping to achieve desired breakup tones.
Source

Features and functionality

0 0

The THD Hot Plate allows line-out to a DAW, enabling custom cab IRs for recording purposes.
Source
0 0

It's crucial to match the amp's speaker output impedance with the attenuator to prevent damage and ensure optimal performance.
Source
0 0

When used as a load, the Hot Plate's fan activates instantly and spins rapidly, which differs from its behavior when connected to a cab.
Source
0 0

The Weber Mass attenuator includes a treble boost switch (+1, +3 dB) to compensate for high-end loss, beneficial for amps like the 74 Bassman.
Source

User experience

0 0

Using a 16 Ohm Hot Plate on an 8 Ohm amp is typically safe, but it reduces the tone control effectiveness.
Source
0 0

Some owners report that the Hot Plate can lead to cranking amps higher than usual, potentially shortening power tube life.
Source

Use cases and applications

0 0

The THD Hot Plate can act as a load box without a cab, but this has caused issues when paired with high wattage amps like the 100-watt Marshall Plexi.
Source
0 0

The THD Hot Plate rated for 2 ohms is recommended for older Fender amps, which often require non-standard impedance settings.
Source

Comparisons

0 0

Alternatives like the UA Ox Box are suggested for similar applications but with potentially more reliability for load handling.
Source
0 0

The Fryette Power Station is praised for its transparency and versatility, especially when used with vintage amps like the '67 Super Reverb and '64 Bassman.
Source
0 0

The Rivera Rock Crusher is favored over models like Weber and THD for its reactive load and direct out features, despite lacking IR and reamping capabilities.
Source

Mods and upgrades

0 0

Some users experiment with using a Tube Screamer or similar overdrive pedals instead of an attenuator to achieve desired breakup at lower volumes.
Source

Add review

5.0 out of 5

Based on 1 Review and 2 Ratings

5 star

4 star

3 star

2 star

1 star

donnyj

327

over 11 years ago

THD 4 ohm Hot Plate

Front of house has to love it when they see a guitar player with one of these. Your able to dump db's without changing the tone of your amp, you might hear a little change but not much. Great piece of gear and comes in handy when playing at home, let's say through a Marshall:-)

Roles:

Guitarist

Genres:

Rock Metal Hard rock