Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Bloggers and YouTubers have tried this product—so we've summarized their strongest opinions below. Links to full reviews follow.
Product Strengths
- Improved speed stability of the Air Force Zero turntable during analog playback
- Increased resolution, improved enunciation, increased dynamics, and rendered background sounds more intelligible
- Helped clean up fracturing that could take place on some LPs when piano keys were vigorously struck in the treble region
- Lowered the noise floor, enlarged the soundstage, increased the sense of black backgrounds, retrieved additional detail, and fortified dynamic swells
- Amplified some of the inherent strengths of digital recordings, adding another level of finesse to the proceedings and intensifying tonal density
Product Considerations
- Plugging in amplifiers led to a somewhat more subdued performance—a 'plusher ride'
Takeaway: The S-2500 delivers on its promise to improve stereo performance and bring the listener closer to the musical truth. It has many positive effects and no negative effects.
All
S-2500 Quantum MKII
reviews
Manufacturer details
- Technology: Computerised lithium-iron-phosphate battery
- Capacity: 2.100 Wh
- Nominal battery voltage: 48 Vdc system
- Input Voltage: 200 – 245 Vac or 100 – 130 Vac
- Input frequency: 50 or 60 Hz
- Transfer time: < 15 ms (on grid to off grid)
- Output voltage: 100 – 130 Vac or 200 – 245 Vac (pure sine)
- Output frequency: 50 Hz / 60 Hz +/- 0.05%
- Continuous output power: 650 VA @ 25°C
- Output power 3 min: 1.100 VA @ 25°C, max 3 min
- Output power 3 sec: 2.600 VA @ 25°C
- AC-Outputs: 4 x schuko (Furutech NFC) or 4 x duplex receptacles (pure copper rhodium plated)
Brand highlights
Taking a step back to look at reviewers' thoughts of the brand's entire lineup—not just this product—what stands out most is the following:
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