Introduction
The Audio Research SP9 is a preamplifier that has been around since the late 1980s. Despite its age, it continues to be a popular choice among audiophiles and music enthusiasts. This preamp is known for its excellent sound quality and reliability, making it a classic piece of audio equipment that has stood the test of time.
Overview
The Audio Research SP9 is a two-channel preamplifier that features six line-level inputs and one phono input. It has a passive RIAA phono equalization that allows it to work with both moving magnet and moving coil cartridges. The preamp also has a tape loop, which allows you to connect a cassette or reel-to-reel recorder.
Design
The SP9 has a classic design that is typical of Audio Research products. It has a brushed aluminum faceplate with black lettering and a row of black knobs. The overall build quality is excellent, with a sturdy chassis and high-quality components. The preamp is also relatively compact, measuring only 19 inches wide, 4 inches high, and 12 inches deep.
Sound Quality
One of the most impressive features of the Audio Research SP9 is its sound quality. It has a warm and detailed sound that is natural and musical. The midrange is particularly impressive, with a rich and full-bodied sound that brings vocals and instruments to life. The bass is also tight and well-defined, while the high frequencies are smooth and extended.
Features and Specifications
Here are some of the key features and specifications of the Audio Research SP9:
- Two-channel preamplifier
- Six line-level inputs and one phono input
- Passive RIAA phono equalization for moving magnet and moving coil cartridges
- Tape loop for connecting a cassette or reel-to-reel recorder
- Brushed aluminum faceplate with black lettering and knobs
- 19 inches wide, 4 inches high, and 12 inches deep
- Warm and detailed sound with a natural and musical presentation
Performance
The Audio Research SP9 is a very capable preamp that performs well across a range of music genres. It has a dynamic and engaging sound that is perfect for rock, pop, and jazz music. It also has a natural and detailed sound that is well-suited to classical and acoustic music.
Compatibility
The SP9 is compatible with a wide range of amplifiers and speakers. It has a low output impedance of 200 ohms, which means that it can drive long cables and difficult loads with ease. It also has a high input impedance of 100k ohms, which ensures that it does not load down your source components.
Conclusion
The Audio Research SP9 is a classic preamplifier that continues to impress. It has a warm and detailed sound that is natural and musical, making it a great choice for a wide range of music genres. Its excellent build quality and reliability also make it a wise investment for audiophiles and music enthusiasts. If you are in the market for a preamp, the Audio Research SP9 is definitely worth considering.
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