
SA-155 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $19.95 | Condition is Used, SA-155 Optimus Radio Shack Integrated mini Stereo Amplifier Amp Black TESTED, shipping cost = $11.99 | 99.7% |
![]() | $19.99 | Condition is Used, SA-155 Optimus radio shack Integrated mini Stereo Amplifier Black TESTED, shipping cost = $12.00 | 99.8% |
![]() | $29.95 | Condition is Used, Vintage Optimus SA-155 Integrated Stereo Amplifier Amp Tested, shipping cost = $9.06 | 99.2% |
![]() | $39.99 | Condition is Used, Optimus SA 155 Integrated Stereo Mini Amplifier Tested Compact Vintage Amp, FREE SHIPPING | 99.4% |
![]() | $23.99 | Condition is Used, OPTIMUS SA-155 COMPACT STEREO RECEIVER Integrated Amp Amplifier Model# 31-1957, shipping cost = $18.30 | 99.4% |
![]() | $24.99 | Condition is Used, Radio Shack Optimus SA-155 Integrated Mini Stereo Amplifier, shipping cost = $21.00 | 99.5% |
![]() | $34.99 | Condition is Used, Optimus SA-155 Integrated Stereo Amplifier Powers On Untested 31-1957, shipping cost = $11.68 | 98.1% |
![]() | $35.00 | Condition is Used, Optimus SA-155 Integrated Stereo Amplifier Amp Sold By Original Owner, shipping cost = $10.00 | 100.0% |
![]() | $34.95 | Condition is Used, Vintage Optimus SA-155 Integrated Stereo Amplifier Vintage Mini Black Tested, shipping cost = $14.10 | 99.9% |
![]() | $39.99 | Condition is Used, Optimus SA-155 Stereo Mini Amplifier, shipping cost = $9.99 | 100.0% |
![]() | $34.95 | Condition is Used, Vintage Optimus SA-155 Integrated Stereo Amplifier Vintage Mini Black, shipping cost = $16.45 | 100.0% |
![]() | $35.00 | Condition is Used, Vintage OPTIMUS Radio Shack SA-155 Integrated Stereo Amplifier SA 155 working, shipping cost = $15.00 | 100.0% |
![]() | $38.50 | Condition is Used, Optimus SA-155 Integrated Stereo Amplifier Amp, shipping cost = $12.35 | 100.0% |
![]() | $41.99 | Condition is Used, Optimus SA 155 Integrated Stereo Amplifier Black Vintage Audio Receiver, shipping cost = $10.94 | 100.0% |
![]() | $29.99 | Condition is Used, Optimus SA-155 Integrated Stereo Amplifier, ED4U #3129, shipping cost = $24.80 | 100.0% |
![]() | $42.00 | Condition is Used, Optimus Integrated Stereo Amplifier SA-155, shipping cost = $15.73 | 97.5% |
![]() | $35.00 | Condition is Used, Optimus SA-155 Integrated Stereo Amplifier, shipping cost = $24.93 | 100.0% |
![]() | $41.99 | Condition is Used, Optimus SA-155 Integrated Stereo Amplifier Phono, Cd/Tape, Tuner, Speakers, shipping cost = $20.90 | 99.9% |
![]() | $36.99 | Condition is Used, Optimus SA-155 Integrated Stereo Amplifier Amp, shipping cost = $30.65 | 100.0% |
![]() | $45.00 | Top Pick! Condition is Used, Vintage Optimus SA-155 Integrated Stereo Amplifier Amp Lot Of 2, shipping cost = $21.05 | 100.0% |
![]() | $49.99 | Top Pick! Condition is Used, OPTIMUS SA-155 Integrated Stereo Amplifier RCA/Radio Shack w aux cd phono input, shipping cost = $18.00 | 99.1% |
![]() | $49.99 | Condition is Used, SA-155 Optimus radio shack Integrated mini Stereo Amplifier Black TESTED, shipping cost = $20.30 | 99.7% |
![]() | $59.99 | Condition is Used, RCA SA-155 Integrated Mini Stereo Amplifier Composite Works Radio Shack Optimus, shipping cost = $11.16 | 98.5% |
![]() | $39.99 | Condition is Used, Vintage Optimus Radio Shack SA-155 Integrated Stereo Amplifier w/ Phono Input, shipping cost = $38.40 | 99.7% |
![]() | $49.99 | Condition is Used, RCA Optimus SA-155 Integrated Mini Stereo Amplifier Multi Phono RCA TESTED, shipping cost = $28.86 | 98.1% |
![]() | $19.99 | Condition is Used, Optimus SA-155 Integrated Mini Stereo Amplifier Composite Tested Working, shipping cost = $67.49 | 100.0% |
![]() | $27.99 | Condition is Used, RCA SA-155 Integrated Mini Stereo Amplifier Composite Works Radio Shack Optimus, shipping cost = $64.90 | 99.9% |
![]() | $19.99 | Condition is Used, Vintage Optimus SA-155 Integrated Stereo Amplifier Amp, shipping cost = $79.02 | 100.0% |
![]() | $22.90 | Condition is Used, Vintage Optimus SA-155 Integrated Stereo Amplifier Phono Tuner Radio CD/Tape, shipping cost = $78.50 | 99.0% |
![]() | $86.04 | Condition is Used, VTG OPTIMUS Model SA-155 / Cat No. 31-1957 Integrated STEREO AMPLIFIER - WORKING, shipping cost = $24.35 | 100.0% |
![]() | $75.00 | Condition is Used, Optimus SA-155 Integrated Stereo Amplifier # 31-1957 Realistic 2 Way Speakers , shipping cost = $38.00 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $67.50 | Top Pick! Condition is Open box, Optimus M: 31-1957, SA-155 Integrated Mini Stereo Amplifier Multi Phono Optimus, shipping cost = $13.88 | 99.1% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $19.99 | Condition is For parts or not working, Optimus SA-155 Integrated Stereo Amplifier UNTESTED - AS IS , shipping cost = $27.50 | 99.5% |
![]() | $49.99 | Condition is For parts or not working, Optimus SA-155 Pair Of Integrated Stereo Amplifier UNTESTED - AS IS - Powers On, FREE SHIPPING | 100.0% |
![]() | $50.00 | Condition is For parts or not working, Optimus SA-155 Integrated Vtg Stereo 2-Channel Amplifier PARTS ONLY UNTESTED, shipping cost = $15.00 | 100.0% |

The Optimum SA-155 Integrated Stereo Amplifier is a powerful and versatile audio component designed to deliver high-quality sound for music and home theater applications. This amplifier boasts a class AB design, which ensures efficient power delivery and minimal distortion, even at high volumes.
The SA-155 is rated for 155 watts per channel into 8 ohms, and it can drive 300 watts into 4 ohms, making it suitable for a wide range of speakers. It features five line-level inputs, allowing you to connect multiple sources such as CD players, turntables, and digital audio players.
This amplifier also includes a phono input, enabling you to connect and play vinyl records directly. It comes with a detachable binding post speaker terminals, which allow for easy and secure speaker connections. The SA-155 also features an RCA pre-amp output, allowing you to connect it to a subwoofer or additional amplifier for enhanced bass response.
The front panel includes a volume control knob, source selector, and a headphone jack for private listening. The amplifier also features a high-pass filter, which can be used to remove low frequencies from the signal sent to a subwoofer, preventing them from being amplified by the main amplifier.
The SA-155's circuitry is built with high-quality components, including a low-noise power supply, metal-film resistors, and polypropylene capacitors. It also features a heavy-duty aluminum chassis, which helps to reduce vibration and improve sonic performance.
This amplifier is designed to be easy to use, with clear labeling on the front panel and a simple setup process. It also includes a remote control, allowing you to adjust volume and source selection from the comfort of your seat.
Overall, the Optimum SA-155 Integrated Stereo Amplifier is a high-performance audio component that delivers clear, detailed sound, and offers a wide range of connectivity options for various sources. It's a great choice for music lovers and home theater enthusiasts who demand high-quality audio from their system.
The Optima SA-155 Integrated Stereo Amplifier is a popular choice for those seeking a compact and affordable amplifier solution for their home audio system. Here are some pros and cons that might help you decide if this amplifier is the right fit for you:
Pros:1. Compact size: The SA-155 is a small and lightweight amplifier, making it an excellent choice for those with limited space.
2. Affordable: This amplifier is priced competitively, making it an attractive option for budget-conscious consumers.
3. Versatile: The SA-155 can be used with various types of speakers, including bookshelf, floor-standing, and even powered subwoofers.
4. Built-in preamp: The built-in preamp allows the SA-155 to be used as a standalone amplifier or integrated into a more complex audio system.
5. Good power output: With a continuous power output of 15 watts per channel into 8 ohms, the SA-155 is capable of delivering enough power for most small to medium-sized rooms.
Cons:1. Limited features: The SA-155 is a basic amplifier without many advanced features.
2. No Bluetooth connectivity: This amplifier does not have built-in Bluetooth connectivity, so you'll need to use other sources, such as a CD player or turntable, to play music.
3. Limited inputs: The SA-155 has only two RCA inputs, which might not be enough for those with larger collections of sources.
4. No auto-on feature: This amplifier does not have an auto-on feature, so it will need to be manually turned on and off.
In conclusion, the Optima SA-155 Integrated Stereo Amplifier is a solid choice for those seeking a compact, affordable, and versatile amplifier solution. While it may lack some advanced features and connectivity options, it delivers good power output and can be used with a variety of speakers. If you have limited space, a small to medium-sized room, and a modest budget, the SA-155 could be an excellent choice for you.
Recommendation: If you're looking for a compact and affordable amplifier for a small to medium-sized room, and you don't require advanced features or connectivity options, the Optima SA-155 Integrated Stereo Amplifier is definitely worth considering. It offers good power output, versatility, and a reasonable price, making it an attractive option for budget-conscious consumers.
Details:
Used - tested working in great condition. This is backed by our 30 day money back guarantee. Sale includes only items pictured. Please view each of the pictures to get a better idea condition specifics.
5 star service is our number one priority.
specifications stereocompo:
- brand: Optimus
- mpn: Sa-155
- compatible brand: Universal
- supported modes: Am, Fm
- color: Black
- surround sound formats: Dolby
- audio outputs: Rca, Headphone Jack, Stereo L/r Rca
- type: Integrated Amplifier
- audio inputs: Composite, Phono/turntable, Stereo L/r Rca, Two-channel Rca
- features: Analog, Digital
- power: 25 W
payments stereocompo:
- wallet: paypal
- other
- credit card: discover
seller stereocompo:
- # reviews: 69388
- city: auburn, washington
- rating: 98.0%
offer stereocompo:
- options: ship-to-home
- in stock #: 5
- best offers: true
- started: april 12, 2025
- prices: $19.95–$86.04
- item condition:
- Used
- Open box
- For parts or not working
- availability: in stock
- sold #: 18
returns stereocompo:
- method: money back
- policy: returns accepted
- time: 30 days
- paid by: seller
shipping stereocompo:
- class: standard, expedited
- service: standard, ups ground, usps priority mail
- transit: 4-9 days
- carrier: ups, usps
- type: fixed
general stereocompo:
- category: Electronics > Audio > Home Stereo Components
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