RCI BM24
The BM-24 is a passive 1-input / 24+8 output portable audio Broadcast Media Press Multi Box. Single line level audio source feeds 24 XLR and 8 -1/8'' mini phone audio outputs with balanced isolation.

Features
• Line Level Audio Input
• 24 Isolated XLR Outputs
• 8 - 1/8'' Mini Isolated Outputs
• 85 dB Isolation
• Rack Mount and Custom Versions Available
• Input Level VU Meter
• Link Output to Additional BM-24's
• Passive and Maintenance Free
• Rugged ABS Case Construction
• Compact and Weighs Only 5 Lbs.
• Made in the USA

Whirlwind 24 Channel Passive press
The PB24 is a single line level input, 24 mic level output passive press box.  The PB Series expands mic outputs when used with line outs on PRESSPOWER2 or PRESSMITE active press boxes or any time a line level feed is available. This unit distributes one line level input to twenty four mic level outputs. Each output is transformer isolated, provides excellent interchannel isolation and is ground lifted to help eliminate noise problems. Whirlwind TRSP-2 transformers are used throughout.
The boxes are constructed with rugged, cold-rolled steel. Dimensions (L x W x D): 10.5" x 11.75" x 2.75"