Class A Car Amplifiers: The Gold Standard in Sound Quality
Key Highlights Class A amplifiers are known for their excellent sound quality. They provide cle...
Read Article →
US Acoustics
US Acoustics Lisa | 4 Channel Class AB Amplifier | 4 x 50w
$ 159.99
QUICK SPECS
- Power: 50W x 4 @ 4 Ohms | 85W x 4 @ 2 Ohms | 170W x 2 Bridged @ 4 Ohms
- Topology: Full Complementary Class AB | THD Below 0.01%
- Best For: Four-Speaker Upgrades | Compact Installs | Daily Drivers
- Size: 12.4 x 8.9 x 2.2 in | Butterworth Crossovers Per Pair
US Acoustics Lisa | 4 Channel Class AB Amplifier | 4 x 50w
Regular price
$ 159.99
Sale price
$ 159.99
Regular price
Unit price
Free Insured Shipping
On orders over $99
Full Warranty
Authorized Dealer
Lifetime Support
Real Installers
INSTALLER'S TAKE
Product Details
Specifications
FAQs
Related Products
Related Video
US Acoustics Analog 4-Channel Series
US Acoustics Lisa 4-Channel Class AB Amplifier
Honest Full Complementary Class AB power for a complete four-speaker system, in a chassis barely over a foot long. The most accessible way into real US Acoustics analog sound.
50W x 4 @ 4 Ohms
85W x 4 @ 2 Ohms
170W x 2 Bridged @ 4 Ohms
2-Year Warranty
Real Class AB Power for the Whole Vehicle
The US Acoustics Lisa delivers 50 watts RMS per channel into 4 ohms and 85 watts RMS per channel into 2 ohms across four channels, rated honestly at 14.4 volts. Bridged, it produces 170 watts RMS x 2 into 4 ohms. That is genuine Full Complementary Class AB output on every speaker in the vehicle, the same low distortion topology US Acoustics has built for over 25 years, with total harmonic distortion below 0.01 percent.
Fifty clean watts per channel transforms a factory-grade system. Most stock head units produce under 20 watts per channel with audible distortion well before full volume. The Lisa replaces that with low distortion power and headroom that lets aftermarket speakers do what they were designed to do.
<0.01%THD
>95 dBS/N Ratio
>85 dBChannel Separation
>100Damping Factor
Independent Butterworth Crossovers on Each Pair
Channels 1 and 2 and channels 3 and 4 carry independent Butterworth crossover filters. The 12 dB per octave high-pass covers ranges from 15 to 500 Hz and 50 Hz to 3 kHz, and the 24 dB per octave low-pass sweeps from 55 Hz to 3.5 kHz. Those wide ranges give the Lisa flexibility well beyond basic front and rear duty, including active 2-way component configurations with the right system design. There is no bass boost, subsonic filter, or phase control on this model.
Three Ways to Run the Lisa
Four-Speaker System Upgrade
The classic configuration. Front and rear pairs each get 50 watts of clean Class AB power, a night and day step up from head unit power for a daily driver.
Front Stage Plus Bridged Rear
Channels 1 and 2 on a front component set, channels 3 and 4 bridged to 170 watts on a small sealed subwoofer. A complete starter sound quality system from one compact amplifier.
Fully Bridged 2-Channel
Both pairs bridged delivers 170 watts x 2 into 4 ohms, serious power for a quality component set in a simple stereo configuration.
Compact by design: at 12.4 x 8.9 x 2.2 inches, the Lisa fits under seats and in tight enclosures where full-size amplifiers will not. Internal fusing is 2 x 25A. Docking Pads reduce vibration transfer to extend amplifier life.
Built to the Same Standard as the Big Amps
Angled terminals for clean wiring, DC, short circuit, thermal, and overload protection with diagnostic LEDs, and the same 2-year warranty that covers the entire US Acoustics line through authorized dealers. Every Lisa sold by Audio Intensity is brand new from US Acoustics.
Authorized US Acoustics Dealer
Audio Intensity ships the US Acoustics Lisa fast from Tullahoma, Tennessee, with real installer support before and after the sale. Not sure if 50 watts per channel is right for your speakers? Ask us. We match amplifiers to systems every day, and we will tell you the truth about what you need.
| US Acoustics Lisa Specifications | |
|---|---|
| Output Power @ 14.4V | |
| RMS per Channel @ 4 Ohms | 50W x 4 |
| RMS per Channel @ 2 Ohms | 85W x 4 |
| RMS Bridged @ 4 Ohms | 170W x 2 |
| 1 Ohm Stable | No |
| Performance | |
| Amplifier Topology | Full Complementary Class AB |
| Total Harmonic Distortion (THD) | Less than 0.01% |
| Signal-to-Noise Ratio | Greater than 95 dB |
| Channel Separation | Greater than 85 dB |
| Frequency Response | 10 Hz to 30 kHz, +/- 0.5 dB |
| Damping Factor @ 100 Hz, 4 Ohms | Greater than 100 |
| Input Sensitivity | 200 mV to 6.0V |
| Crossovers (Independent Per Channel Pair) | |
| Crossover Type | Butterworth |
| High-Pass Filter (12 dB/octave) | 15 to 500 Hz / 50 Hz to 3 kHz |
| Low-Pass Filter (24 dB/octave) | 55 Hz to 3.5 kHz |
| Subsonic Filter | No |
| Bass Boost | No |
| Wired Remote Bass Control | No |
| Phase Shift | No |
| Physical and Protection | |
| Fusing | 2 x 25A |
| Terminals | Angled for clean installations |
| Vibration Control | Docking Pads |
| Protection Circuitry | DC, Short Circuit, Thermal, Overload |
| Diagnostic LEDs | Yes |
| Dimensions (L x W x H) | 12.4 x 8.9 x 2.2 in |
| Warranty | 2 Years (Authorized Dealers) |
No video available for this product yet.
Check back soon, or reach out and we'll walk you through it: 707-999-3071
