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Each StromTank model operates similarly, with the main difference being the battery size, which allows for higher wattage draws referenced in the Specifications. 

The sonic outcome of using the StromTank is that when you have a lower noise floor, you have more clarity; when you have more clarity, you experience more details within the music, making it livelier and more dynamic. 

StromTank offers solutions for most systems; further consultation is required to understand your system better. In short, the S1000 and Quantum S2500 MKII are choices for front-end equipment, and the S4000 and S5000 can support the front-end and/or Class A/B amplification.

From Edward: We here at Audio-Ultra have experienced the benefits of StromTank and have demonstrated at Axpona and Pacific Audio Fest how the noise floor collapses when switching between on-grid and battery direct, which makes the case, like many things in Audio, you don’t know until you know. 


  • Technology: Computer Controlled Lithium Iron Phosphate Battery Array
  • Storage Capacity: 2.700 Wh
  • Output Frequency: 60 Hz +/- 0.05% (Crystal Controlled)
  • Continuous Output Power: 950 VA
  • Output Power: 30 Minutes 1500 VA
  • Output Peak Power: 3700 VA
  • AC Outlet Receptacles: 6
  • Weight: 135 lbs
  • Dimension: 19” X 23” x 23”
  • Optional Remote Control