Check the listing for details. Bruel & Kjaer Product Data for Multichannel Analysis System Type 3550 BP 1022-11. Condition: Used. Listed at 28.50 USD. KEYWORDS: * B&K * modularity * hardware Type 2035 * Type 2816 * software * software types 7649 7639 7640 * operation * calibration * IEEE/IEC interface * user definable functions * ms-dos disk drive * specifications 3550 * dual-channel 3550 * multichannel 3550 * zoom processor types 3156 3156 * specifications 7649 * input modules types 3019 3020 * specifications generator & sampling module types 3106 3018 * simulator unit ZZ0220 * acquisition units 2816 7520 * signal analyzer interface modules types 7521 3015 3016 * sound intensity module type 3017 * generator module type 3107 Please note: I ship to USA only. Depending on buyer's location, eBay may collect sales tax. Price is firm. Listed here is a vintage 1990s, 19-page Bruel & Kjaer Product Data brochure BP 1022-11 for the Multichannel Analysis System - Type 3550. Condition is like new. Please see the photos. Please ask any questions you might have prior to bidding or buying. Thank you. Seller’s item reference number: 15.702 – 410 note: listings from this seller may be unavailable from 12/7 through 12/26 hhL8241028SDT_3