UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934
Filed by the Registrant  x
Filed by a Party other than the Registrant  o
Check the appropriate box:
o	Preliminary Proxy Statement
o	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
o	Definitive Proxy Statement
x	Definitive Additional Materials
o	Soliciting Material Pursuant to §240.14a-12
KOSS CORPORATION
(Name of Registrant as Specified In Its Charter)
N/A
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
Payment of Filing Fee (Check the appropriate box):
x	No fee required.
o	Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.
	(1)		Title of each class of securities to which transaction applies:
	(2)		Aggregate number of securities to which transaction applies:
	(3)		Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):
	(4)		Proposed maximum aggregate value of transaction:
	(5)		Total fee paid:
o	Fee paid previously with preliminary materials:
o	Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.
	(1)	Amount Previously Paid:
	(2)	Form, Schedule or Registration Statement No.:
	(3)	Filing Party:
	(4)	Date Filed:

0 14475 4129 KOSS CORPORATION North Port Washington Avenue Milwaukee, Wisconsin 53212 SPECIAL MEETING THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS. The undersigned hereby appoints Michael J. Koss and Thomas L. Doerr, or either of them, as Proxies, each with full power of substitution for himself, and hereby authorizes them to represent and to vote, as designated on the reverse side, all the shares of common stock of Koss Corporation held as of the record date and which the undersigned is entitled to vote at the Special Meeting of Stockholders to be held on November 19, 2009 and any or all adjournments thereof, with like effect as if the undersigned were personally present and voting. Properly executed proxies received by the Company will be voted in the manner directed herein by the undersigned stockholder. If no direction is made, this proxy will be voted FOR Proposal 1. If any other matters properly come before the meeting, this proxy will be voted in accordance with the best judgment of the Proxies appointed. The undersigned hereby acknowledges receipt of the Notice of Special Meeting of Stockholders and the Proxy Statement furnished therewith. (CONTINUED AND TO BE SIGNED ON REVERSE SIDE) PROXY

SPECIAL MEETING OF STOCKHOLDERS OF KOSS CORPORATION November 19, 2009 NOTICE OF INTERNET AVAILABILITY OF PROXY MATERIAL: The Notice of Meeting, Proxy Statement, Proxy Card are available at www.koss.com Please sign, date and mail your proxy card in the envelope provided as soon as possible. Signature of Stockholder Date: Signature of Stockholder Date: Note: Please sign exactly as your name or names appear on this Proxy. When shares are held jointly, each holder should sign. When signing as executor, administrator, attorney, trustee or guardian, please give full title as such. If the signer is a corporation, please sign full corporate name by duly authorized officer, giving full title as such. If signer is a partnership, please sign in partnership name by authorized person. To change the address on your account, please check the box at right and indicate your new address in the address space above. Please note that changes to the registered name(s) on the account may not be submitted via this method. 1. Election of Directors: O John C. Koss O Thomas L. Doerr O Michael J. Koss O Lawrence S. Mattson O Theodore H. Nixon O John J. Stollenwerk 1. PROPOSAL TO AUTHORIZE THE BOARD OF DIRECTORS, IN ITS DISCRETION, TO AMEND THE COMPANY’S RESTATED CERTIFICATE OF INCORPORATION TO INCREASE THE NUMBER OF AUTHORIZED SHARES OF COMMON STOCK. 2. IN THEIR DISCRETION, THE PROXIES ARE AUTHORIZED TO VOTE UPON SUCH OTHER BUSINESS AS MAY PROPERLY COME BEFORE THE MEETING. FOR AGAINST ABSTAIN FOR ALL NOMINEES WITHHOLD AUTHORITY FOR ALL NOMINEES FOR ALL EXCEPT (See instructions below) INSTRUCTIONS: To withhold authority to vote for any individual nominee(s), mark “FOR ALL EXCEPT” and fill in the circle next to each nominee you wish to withhold, as shown here: NOMINEES: THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” PROPOSAL 1. PLEASE SIGN, DATE AND RETURN PROMPTLY IN THE ENCLOSED ENVELOPE. PLEASE MARK YOUR VOTE IN BLUE OR BLACK INK AS SHOWN HERE x Please detach along perforated line and mail in the envelope provided. 00030000000000000000 4 111909

0  14475 KOSS CORPORATION 4129 North Port Washington Avenue Milwaukee, Wisconsin 53212 SPECIAL MEETING THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS The undersigned hereby appoints Michael J. Koss and Thomas L. Doerr, or either of them, as Proxies, each with full power of substitution for himself, and hereby authorizes them to represent and to vote, as designated on the reverse side, all the shares of common stock of Koss Corporation held as of the record date and which the undersigned is entitled to vote at the Special Meeting of Stockholders to be held on November 19, 2009 and any or all adjournments thereof, with like effect as if the undersigned were personally present and voting. Properly executed proxies received by the Company will be voted in the manner directed herein by the undersigned stockholder. If no direction is made, this proxy will be voted FOR Proposal 1. If any other matters properly come before the meeting, this proxy will be voted in accordance with the best judgment of the Proxies appointed. The undersigned hereby acknowledges receipt of the Notice of Special Meeting of Stockholders and the Proxy Statement furnished therewith. (Continued and to be signed on the reverse side) PROXY

SPECIAL MEETING OF STOCKHOLDERS OF KOSS CORPORATION KESOT PLAN November 19, 2009 NOTICE OF INTERNET AVAILABILITY OF PROXY MATERIAL: The Notice of Meeting, Proxy Statement, Proxy Card are available at www.koss.com Please sign, date and mail your proxy card in the envelope provided as soon as possible. Signature of Stockholder Date: Signature of Stockholder Date: Note: Please sign exactly as your name or names appear on this Proxy. When shares are held jointly, each holder should sign. When signing as executor, administrator, attorney, trustee or guardian, please give full title as such. If the signer is a corporation, please sign full corporate name by duly authorized officer, giving full title as such. If signer is a partnership, please sign in partnership name by authorized person. To change the address on your account, please check the box at right and indicate your new address in the address space above. Please note that changes to the registered name(s) on the account may not be submitted via this method. 1. Election of Directors: O John C. Koss O Thomas L. Doerr O Michael J. Koss O Lawrence S. Mattson O Theodore H. Nixon O John J. Stollenwerk 1. PROPOSAL TO AUTHORIZE THE BOARD OF DIRECTORS, IN ITS DISCRETION, TO AMEND THE COMPANY’S RESTATED CERTIFICATE OF INCORPORATION TO INCREASE THE NUMBER OF AUTHORIZED SHARES OF COMMON STOCK. 2. IN THEIR DISCRETION, THE PROXIES ARE AUTHORIZED TO VOTE UPON SUCH OTHER BUSINESS AS MAY PROPERLY COME BEFORE THE MEETING.. FOR AGAINST ABSTAIN FOR ALL NOMINEES WITHHOLD AUTHORITY FOR ALL NOMINEES FOR ALL EXCEPT (See instructions below) INSTRUCTIONS: To withhold authority to vote for any individual nominee(s), mark “FOR ALL EXCEPT” and fill in the circle next to each nominee you wish to withhold, as shown here: NOMINEES: THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” PROPOSAL 1. PLEASE SIGN, DATE AND RETURN PROMPTLY IN THE ENCLOSED ENVELOPE. PLEASE MARK YOUR VOTE IN BLUE OR BLACK INK AS SHOWN HERE x Please detach along perforated line and mail in the envelope provided. 00030000000000000000 4 111909