Amplifiers – Hybrid Audio Technologies
Unity Amplifiers are designed to be integrated into your sound quality system with a plethora of options; they offer a refined balance of beauty, efficiency, power, size, performance, and value.
With flexible and bypassable onboard crossover options, including bandpass capability (U5A and U4A), Unity amplifiers work well in a wide variety of system choices. The beautiful tempered glass cover and understated looks fit well in any install.

Unity Amplifier Features & Specifications

The difference between an ordinary and great-sounding amplifier, at any price point, comes down to the experience, care, and knowledge of the design team; with many hours listening to and fine-tuning the product to provide the best sounding result possible.
Unity Amplifiers were developed and tuned by a team with over 40 years of amplifier design experience, and as a result, they yield a warm, detailed, and accurate musical presentation that is rare in this price class. The designers avoided the power numbers race, and instead concentrated on the sound and making sure they work seamlessly with all ranges of speaker products offered by Hybrid Audio Technologies.

Unity U5A & U4A

• Class “D” High-Current Operation
• Dual Discrete Drive Stages
• MOSFET PWM Power Supply
• Bridgeable & Tri-Mode Operation
• Continuously Variable and Defeatable 12dB/Octave High Pass & 12dB/Octave Low Pass Crossovers
• Nickel Plated RCA, Power & Speaker Terminals
• Soft Start & Muting
• DC, Thermal, and Short Circuit Protection

Unity U1A

• Class “D” High-Current Operation
• 2 Ohm Stable
• Spec Audiophile Grade Components
• High-Efficiency PWM Power Supply
• Multi-Stranded Power Toroid
• MOSFET Transistors
• Oversized Capacitor Banks
• Discrete Mount Power & Speaker Terminals
• Variable Low Pass Crossover 50 - 250 Hz
• Circuit, Thermal and Overload Protection
• Power and Protection Indicator
• Remote Level Control



Unity_Amplifiers_Manual-210x297_Page_01

Unity-Series Amplifier Manual

Follow this link or press the cover photo to view the Unity-series Amplifiers Reference Manual.


Questions? Contact Us

Whether it's regarding a vehicle application, tuning, or product questions, we'll do our best to support you with a solution.
Unity Amplifiers are designed to be integrated into your sound quality system with a plethora of options; they offer a refined balance of beauty, efficiency, power, size, performance, and value.
With flexible and bypassable onboard crossover options, including bandpass capability (U5A and U4A), Unity amplifiers work well in a wide variety of system choices. The beautiful tempered glass cover and understated looks fit well in any install.

Unity Amplifier Features & Specifications

The difference between an ordinary and great-sounding amplifier, at any price point, comes down to the experience, care, and knowledge of the design team; with many hours listening to and fine-tuning the product to provide the best sounding result possible.
Unity Amplifiers were developed and tuned by a team with over 40 years of amplifier design experience, and as a result, they yield a warm, detailed, and accurate musical presentation that is rare in this price class. The designers avoided the power numbers race, and instead concentrated on the sound and making sure they work seamlessly with all ranges of speaker products offered by Hybrid Audio Technologies.

Unity U5A & U4A

• Class “D” High-Current Operation
• Dual Discrete Drive Stages
• MOSFET PWM Power Supply
• Bridgeable & Tri-Mode Operation
• Continuously Variable and Defeatable 12dB/Octave High Pass & 12dB/Octave Low Pass Crossovers
• Nickel Plated RCA, Power & Speaker Terminals
• Soft Start & Muting
• DC, Thermal, and Short Circuit Protection

Unity U1A

• Class “D” High-Current Operation
• 2 Ohm Stable
• Spec Audiophile Grade Components
• High-Efficiency PWM Power Supply
• Multi-Stranded Power Toroid
• MOSFET Transistors
• Oversized Capacitor Banks
• Discrete Mount Power & Speaker Terminals
• Variable Low Pass Crossover 50 - 250 Hz
• Circuit, Thermal and Overload Protection
• Power and Protection Indicator
• Remote Level Control


Unity U5A

Unity U5A

Unity U5A

• Power RMS @ 4 ohms: 75w x 4 + 400w x 1
• Power RMS @ 2 ohms: 110w x 4 + 600w x 1
• Power RMS @ 4 ohms bridged: 220w x 2
• THD: <0.05% at rated power
• Low Pass Filter: 600 Hz-6 kHz (Channels 3&4) 50-200 Hz (Channel 5)
• High Pass Filter: 15 Hz-6 kHz (Channels 1&2) 50-500 HZ (Channels 3&4)
• Frequency Response: 10 Hz-30 kHz (Channels 1-4) 10-250 Hz (Channel 5)
• Signal to Noise Ratio: >100 db
• Input Sensitivity: 350 mV-6 V
• Input Impedance: 22k Ohm
• Minimum Speaker Impedance @ Stereo: 2 Ohm
• Fuse Rating: 30A x 3
• Dimensions (mm): 185 x 55 x 410
• Dimensions (in): 7.28 x 2.17 x 16

Speaker Wiring Diagram

Unity U4A

Unity U4A

Unity U4A

• Power RMS @ 4 ohms: 75w x 4
• Power RMS @ 4 ohms bridged: 220w x 2
• THD: <0.05% at rated power
• Low Pass Filter: 60 Hz-6 kHz (Channels 1/2) 60-600 Hz (Channels 3/4)
• High Pass Filter: 50 Hz-200 Hz (Channels 1/2) 15 Hz - 6 kHZ (Channels 3/4)
• Frequency Response: 10 Hz-30 kHz
• Signal to Noise Ratio: >100 db
• Input Sensitivity: 350 mV - 6 V
• Input Impedance: 22k Ohm
• Minimum Speaker Impedance @ Stereo: 2 Ohm
• Fuse Rating: 25A x 2
• Dimensions (mm): 185 x 55 x 290
• Dimensions (in): 7.28 x 2.17 x 11.42

Speaker Wiring Diagram

Unity U1A

Unity U1A

Unity U1A

• Power RMS @ 4 ohms: 600w x 1
• Power RMS @ 2 ohms: 1000w x 1
• Low Pass Filter: 50-250 Hz
• Frequency Response: 10-250 Hz
• Signal to Noise Ratio: >100 db
• Input Sensitivity: 350 mV - 6 V
• Input Impedance: 22k Ohm
• Minimum Speaker Impedance: 2 Ohm mono
• Fuse Rating: 30A x 3
• Dimensions (mm): 185 x 55 x 410
• Dimensions (in): 7.3 x 2.2 x 16

Speaker Wiring Diagram

Questions? Contact Us

Whether it's regarding a vehicle application, tuning, or product questions, we'll do our best to support you with a solution.
Unity_Amplifiers_Manual-210x297_Page_01

Unity-Series Amplifier Manual

Follow this link or press the cover photo to view the Unity-series Amplifiers Reference Manual.

Find a Dealer

Enter an address or zip code and click the find locations button.

Hybrid Audio Technologies highly encourages the purchase and installation of our products from authorized "brick and mortar" retailers. When our products are purchased and installed by one of our authorized dealers, you will receive a three-year limited warranty. If you buy our products from an authorized source, and they are not installed by one of our authorized dealers, you will receive a one-year limited warranty.
Our authorized Internet specialists, 12V Electronics, based in Illinois Audio Intensity, based in California
sell at Hybrid Audio Technologies' mandated retail pricing. If you find a Hybrid Audio Technologies product on the Internet from a source other than these, the buyer should consider the product as used or grey market and does not include any warranty or after purchase support from Hybrid Audio Technologies or its affiliates. We highly recommend buying Hybrid Audio Technologies from a reputable, AUTHORIZED source.
For further info or International inquiries, please Contact Us.