Black Box Music
The finest universal all-tube buffer
for amplified musical instruments!
The SGBB is a true, audiophile quality, vacuum tube pickup driver (buffer/impedance matcher) especially designed for enhancing the tone of magnetic or piezoelectric musical instrument pickups. Originally developed for use with pedal steel guitar, the Black Box is equally effective at breathing life into and enhancing the tone of upright or electric bass, electric or acoustic guitar, mandolin, fiddle, Rhodes or Wurlitzer electric piano, synths and keyboards, drum machines, lap steel guitar, studio mix tracks, and more.
The Black Box's output will easily drive just about any device without subjecting your sound to tone-killing capacitive loads or inadequate input circuits as found in many effect units. The Black Box generates a warm, sweet and musical smoothness that you just can't achieve with the use of transistors or digital modeling devices. It lets your guitar "think" it's plugged directly into the finest tube amplifier and still allows the use of many effect pedals and devices after it.
When used with acoustic pickups, the Black Box does an amazing job of taming that typical hard, brittle, crispy high end, and turns the treble into something much more natural, sweet, and musical. It also works wonders on that frustrating midrange often experienced with acoustic pickups, and makes it far less necessary to resort to heavy and complex EQ notches and filters to get the right sound. The end result is an acoustic instrument that sounds much more like wood and strings, and a lot less like a pickup.
Music Box Mini - Ultra Portable Bluetooth Speaker (Black)
Network Media Player (Inspira Technologies)
What is black box testing?
Functional testing (also known as black-box testing) is the process of verifying that a system or system component adheres to the specification that defines its requirements. Functional testing can be performed at the system level or the unit level. To perform functional testing, you typically create a set of input/outcome relationships that verify whether each specification requirement is implemented correctly. At least one test case should be created for each entry in the specification document; preferably, these test cases should test the various boundary conditions for each entry. A…