EXHIBIT 99.1

Joint Filing Agreement

In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, each of the persons named below agrees to the joint filing on behalf of each of them of a statement on Schedule 13G, and all future amendments thereto, with respect to the Common Stock, par value $0.01 per share, of CPI International, Inc., a Delaware corporation, and further agrees that this Joint Filing Agreement be included as an exhibit to such filings provided that, as contemplated by Rule 13d-1(k)(l)(ii), no person shall be responsible for the completeness or accuracy of the information concerning the other persons making the filings, unless such person knows or has reason to believe that such information is inaccurate.

Dated: February 14, 2007
	CYPRESS ASSOCIATES II LLC
	By:	/s/James A. Stern
	Name:			James A. Stern
	Title:			Managing Member
	CYPRESS MERCHANT BANKING
	PARTNERS II L.P.
	By: Cypress Associates II LLC, its General
	Partner
	By:		/s/James A. Stern
	Name:			James A. Stern
	Title:			Managing Member
	CYPRESS MERCHANT B II C.V.
	By: Cypress Associates II LLC, its Managing
	General Partner
	By:		/s/James A. Stern
	Name:			James A. Stern
	Title:			Managing Member

55TH STREET PARTNERS II L.P.
By: Cypress Associates II LLC, its General
Partner
By:		/s/James A. Stern
Name:			James A. Stern
Title:			Managing Member
CYPRESS SIDE-BY-SIDE LLC
By:	/s/James A. Stern
Name:			James A. Stern
Title:			Sole Member
/s/James A. Stern
JAMES A. STERN
/s/Jeffrey P. Hughes
JEFFREY P. HUGHES