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 S-2500Q 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. 

The StromTank S1000 and StromTank S-2500Q 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.