All in one audio line tester/generator/intercom Since its introduction in 1997 the Qbox has become one of Whirlwind's most successful "Black Boxes" ever.. The Qbox is the all-in-one audio line tester... View more

Four-channel version of Whirlwind's popular pcDI in a single space, rack mount enclosure Each of the four channels has stereo, unbalanced line level inputs that are converted to balanced mic level,... View more

4-channel headphone class-A/B stereo amplifier, stylish tabletop design The HATT4 is a sonically superior, four output stereo headphone amplifier. The outputs deliver clean, high power signal capable... View more