SA990

Summit Audio

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SA990 SUMMIT AUDIO Discrete Opamp

The Summit Audio SA-990 Discrete Op-amp is a high-end, dual-channel microphone preamplifier and line amplifier that delivers exceptional performance and sonic clarity. This premium component is carefully crafted to provide unparalleled accuracy, transparency, and musicality for professional recording and audio applications.

The SA-990 employs a discrete, fully balanced design, utilizing hand-selected, high-quality components. The op-amp's input stage comprises of JFETs, while the output stage features hand-matched, hand-wired, and hand-biased discrete transistors. The design eliminates the need for global feedback, enabling the amplifier to maintain its pristine sonic character even at high gain settings.

The SA-990 offers an impressive frequency response of 10 Hz to 100 kHz, ensuring accurate reproduction of the entire audio spectrum. The input impedance of 2 k is optimized for microphones, while the output impedance of 50 is ideal for interfacing with mixing consoles, audio interfaces, and other professional equipment.

The amplifier features a transformerless, fully-floating, differential balanced design, which minimizes noise and ensures superior common-mode rejection. The SA-990 also boasts an extremely low noise floor, with an EIN of -130 dBu, making it an excellent choice for low-level recording applications.

Additionally, the SA-990 includes a high-pass filter, which can be engaged to remove unwanted low-frequency noise and rumble. The filter has a selectable cutoff frequency of 40 Hz or 80 Hz, allowing users to tailor the amplifier's performance to their specific application.

The Summit Audio SA-990 Discrete Op-amp is housed in a rugged, 2RU 19-inch rackmount enclosure, with front-panel controls for input gain, phase reversal, and high-pass filter engagement. The unit also includes XLR and TRS input and output connectors, and it can be easily powered using standard 100-240V AC power supplies.

In summary, the Summit Audio SA-990 Discrete Op-amp is a versatile, high-performance microphone preamplifier and line amplifier designed for professional recording and audio applications. Its fully balanced, discrete design, low noise floor, and wide frequency response deliver unmatched accuracy, transparency, and musicality, making it an essential addition to any high-end recording studio or audio system.

The Summit Audio SA990 SA-990 Discrete Op-amp is a high-end audio component that is widely regarded for its superior sound quality. Here are some pros and cons that can help you make an informed decision about whether this op-amp is worth your investment:

Pros:

1. Superior Sound Quality: The SA990 Discrete Op-amp delivers exceptional sound quality with a clear, detailed, and natural sound that is unmatched by many other op-amps in its price range.

2. Discrete Design: The discrete design of this op-amp ensures that each transistor is biased and operated individually, resulting in a more authentic and accurate sound.

3. Low Distortion: The SA990 Discrete Op-amp has a very low distortion rate, making it an excellent choice for high-end audio applications where low distortion is essential.

4. High Current Capability: This op-amp can deliver high current output, making it suitable for driving complex speaker systems.

5. Reliability: Summit Audio is known for its high-quality components and reliable designs, making the SA990 Discrete Op-amp a durable and trustworthy investment.

6. Versatility: The SA990 Discrete Op-amp can be used in a variety of audio applications, including preamplifiers, power amplifiers, and recording consoles.

Cons:

1. Expensive: The Summit Audio SA990 SA-990 Discrete Op-amp is a premium product, and its high price tag may be a barrier for some potential buyers.

2. Limited Availability: Due to its high demand and limited production, the SA990 Discrete Op-amp may be difficult to find in stock and may require some patience and persistence to acquire.

3. Complex Setup: The SA990 Discrete Op-amp may require some expertise to properly set up and configure, making it less suitable for beginners or those without extensive audio experience.

Conclusion:

The Summit Audio SA990 SA-990 Discrete Op-amp is an exceptional audio component that delivers superior sound quality, low distortion, high current capability, reliability, and versatility. However, its high price tag, limited availability, and complex setup may be barriers for some potential buyers. If you are an audiophile or professional audio engineer looking for the best sound quality possible, the SA990 Discrete Op-amp may be worth the investment, but it may not be the best choice for beginners or those on a budget.

Recommendation:

If you are an audiophile or professional audio engineer with the budget and expertise to properly set up and utilize the Summit Audio SA990 SA-990 Discrete Op-amp, then it is an excellent choice for delivering exceptional sound quality and performance. However, if you are a beginner or on a budget, you may want to consider alternative op-amps that offer similar features at a lower price point. Additionally, it may be worth considering used or refurbished SA990 Discrete Op-amps to save on cost while still enjoying the excellent sound quality that this component is known for.

Details:

We replaced all of the opamp in our eq for good measure and this one is still working just fine, spares or replacement. Relatively low hours from a newer model.

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rating: 100.0% out of 100 based on 665 user ratings.
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