Pueblo Audio OLLA-4
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OLLA is offered in two packages: the standard, mono box and this four channel, 1U rack mount. The features and performance of the two packages are identical with one exception: OLLA-4 has two inputs instead of one. Typically its rear inputs would be used for more permanent connections such as with keyboard/synth racks or other back-line applications. However, the rear inputs can be overridden by plugging into the convenient front panel jacks. OLLA-4 is equipped with flexible internal connections for grounding or floating each channel, as needed.