Sony ULT Field 5 ZDNET's key takeaways The Sony ULT Field is available for $330 in Off White and Black. The Sony ULT Field 5 was launched in April alongside the ULT Field 3 and ULT Tower speakers. It joins the ULT Field 1 and ULT Field 7 in the growing ULT lineup of Sony's bass-focused audio products. I didn't expect to enjoy carrying around a 3.3kg (7.2 lb) device, but this Sony speaker has grown on me. The Sony ULT Field 5 retains some design cues from its predecessor, the Sony SRS-XG300, including the LED lights.