my account |  Login
bookmark us twitter facebook endorsed artists community contact
Skip Navigation Links
New Products

Show Picture 1Show Picture 2



Designed for use in both live and studio applications requiring multiple interface of unbalanced Hi-Z equipment to balanced Lo-Z mixer inputs (multiple keyboardists, for example).  This rugged single rack space unit is built with a cold rolled steel chassis for superior shielding and durability.  On the front panel, each channel has a Hi-Z input with a loop-thru jack, a ground lift switch, and a -20dB pad switch for using either instrument level or line level (keyboards, drum triggers, etc.) sources.  On the rear panel, each channel has a Hi-Z input/output 1/4 inch jack, and XLR male Lo-Z output as well as a balanced 1/4 inch output.  These configurations permit a variety of patching options to simplify your setup.  This unit is like having four SL-2 direct boxes in a single rack space.


• Transforms Hi-Z 1/4 inch input to balanced Lo-Z XLR output

• -20db pad to filter a signal that is "too hot"

• Equivalent of 4 SL-2 direct boxes in a single rack space

• 1 space rack mount box

• Superior quality connectors and transformers

• Ground lift switches to eliminate hum

• Paralleled 1/4 inch output for on-stage monitoring

• Individually tested for performance and quality


Approximate size: 19"(w) x 1 3/4"(h) x 5"(d)
The following is a list of connectors on this item:

(4) XLRM
(4) 1/4
(4) 1/4
(4) IMT-1
(8) Switches

XLR male panel mount
Stereo panel mount
Mono panel mount
Panel mount ground lift switches

Model Number

Model # SL-4

Four Channel, Rack Mount Direct Box


Limited Lifetime Warranty

All RapcoHorizon devices carry a full limited lifetime warranty to the original purchaser against defect in materials and workmanship.  Custom lengths or configurations carry a 1 year warranty.  Items returned for warranty should be sent freight prepaid to our factory at the address listed below.

Please include proof of purchase, a brief description of the problem and your name and return shipping address.   Qualifying items will be repaired or replaced at our discretion and shipped to the return address provided via normal ground service.

The RapcoHorizon Company
3581 Larch Lane
Jackson, MO 63755