SECURITIES AND EXCHANGE COMMISSION
                             Washington. D.C. 20549

                                  SCHEDULE 13D
                                 (Rule l3d-101)

            INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
                                 RULE 13d-2(a)

                              (Amendment No. 6)(1)

                              Qualstar Corporation
 -----------------------------------------------------------------------------
                                (Name of Issuer)

                           Common Stock, no par value
 -----------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   74758R109
 -----------------------------------------------------------------------------
                                 (CUSIP Number)

                            BKF Capital Group, Inc.
                               Steven N. Bronson
                      225 N.E. Mizner Boulevard, Suite 400
                           Boca Raton, Florida 33432
                                 (561) 362-4199

                                with a copy to:

                            James A. Prestiano, Esq.
                           631 Commack Road, Suite 2A
                            Commack, New York 11725
                                 (631) 499-6000

                ------------------------------------------------
                 (Name, Address and Telephone Number of Person
               Authorized to Receive Notices and Communications)

                                  May 18, 2012
                 ----------------------------------------------
            (Date of Event which Requires Filing of This Statement)

    If the filing person has previously filed a statement on Schedule 13G to
report the acquisition that is the subject of this Schedule 13D, and is filing
this schedule because of Rule l3d-l(e), 13d-1(f) or 13d-1(g), check the
following box [ ]

         Note: Schedules filed in paper format shall include a signed original
     and five copies of the schedule, including all exhibits. See Rule 13d-7(b)
     for other parties to whom copies are to be sent.

         The information required on the remainder of this cover page shall not
     be deemed to be "filed" for the purpose of Section 18 of the Securities
     Exchange Act of 1934 or otherwise subject to the liabilities of that
     section of the Act but shall be subject to all other provisions of the Act
     (however, see the Notes)

                        (Continued on following pages)

--------
    (1) The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter disclosures provided in a prior cover page.



CUSIP No. 74758R109
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1.       NAME OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

         BKF Capital Group, Inc.                     Tax Id. No. 36-0767530
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2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP            (a) [ ]
                                                                     (b) [ ]

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3.       SEC USE ONLY


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4.       SOURCE OF FUNDS


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5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) OR 2(e)                                  [ ]
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6.       CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware
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NUMBER OF              7.      SOLE VOTING POWER
SHARES                         2,234,520
BENEFICIALLY            ------------------------------------------------------
OWNED BY               8.      SHARED VOTING POWER
EACH                           0
REPORTING               ------------------------------------------------------
PERSON                 9.      SOLE DISPOSITIVE POWER
WITH                           2,234,520
                        ------------------------------------------------------
                       10.     SHARED DISPOSITIVE POWER
                               0
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11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         2,234,520
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12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*                                                 [ ]
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13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         18.2%
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14.      TYPE OF REPORTING PERSON

         CO
-----------------------------------------------------------------------------
                       SEE INSTRUCTIONS BEFORE FILLING OUT



CUSIP No. 74758R109
-----------------------------------------------------------------------------
1.       NAME OF REPORTING PERSONS
         I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

         Steven N. Bronson
-----------------------------------------------------------------------------
2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP            (a) [ ]
                                                                     (b) [ ]

-----------------------------------------------------------------------------
3.       SEC USE ONLY


-----------------------------------------------------------------------------
4.       SOURCE OF FUNDS


-----------------------------------------------------------------------------
5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) OR 2(e)                                  [ ]
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6.       CITIZENSHIP OR PLACE OF ORGANIZATION

         USA
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NUMBER OF              7.      SOLE VOTING POWER
SHARES                         57,700
BENEFICIALLY            ------------------------------------------------------
OWNED BY               8.      SHARED VOTING POWER
EACH                           2,234,520
REPORTING               ------------------------------------------------------
PERSON                 9.      SOLE DISPOSITIVE POWER
WITH                           57,700
                        ------------------------------------------------------
                       10.     SHARED DISPOSITIVE POWER
                               2,234,520
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11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         2,292,220
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12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*                                                 [ ]
-----------------------------------------------------------------------------
13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         18.7%
-----------------------------------------------------------------------------
14.      TYPE OF REPORTING PERSON

         IN
-----------------------------------------------------------------------------
                       SEE INSTRUCTIONS BEFORE FILLING OUT



CUSIP No. 74758R109                SCHEDULE 13D

Item 1. Security and Issuer.

     Except as expressly restated and amended below, the Schedule 13D as filed
on behalf of BKF Capital Group, Inc. and Steven N. Bronson with respect to the
shares of common stock, no par value per share (the "Common Stock") of Qualstar
Corporation, a California corporation, with its principal offices located at
3990-B Heritage Oak Court Simi Valley, CA 93063 (the "Issuer") remains in full
force and effect. The Issuer recently reported that as of March 31, 2012, the
Issuer had 12,253,117 shares of Common Stock outstanding.

Item 2. Identity and Background.

     (a) This Schedule 13D Amendment No. 6 is filed on behalf of BKF Capital
Group, Inc. ("BKF Capital") and Steven N. Bronson.

     (b) BKF Capital and Mr. Bronson's business address is 225 N.E. Mizner
Boulevard, Suite 400, Boca Raton, Florida 33432.

     (c) BKF Capital is a publicly traded corporation and Mr. Bronson is the
Chairman and President of BKF Capital. Mr. Bronson is the sole owner of BA Value
Investors, LLC, a Florida limited liability company.  Mr. Bronson is also
President of Catalyst Financial LLC ("Catalyst"), a broker-dealer registered
under the Act.  Catalyst's offices are located at 225 N.E. Mizner Boulevard,
Suite 400, Boca Raton, Florida 33432.

     (d) During the last five years neither BKF Capital nor Mr. Bronson have
been convicted in a criminal proceeding (excluding traffic violations or similar
misdemeanors).

     (e) Neither BKF Capital nor Mr. Bronson have, during the last five years,
been a party to a civil proceeding of a judicial or administrative body of
competent jurisdiction and as a result of such proceeding was or is subject to a
judgment, decree or final order enjoining further violations of, or prohibiting
or mandating activities subject to the federal or state securities laws or
finding any violation with respect to such laws.

     (f) BKF Capital is organized under the laws of the State of Delaware and
Mr. Bronson is a citizen of the United States of America.

Item 3. Source and Amount of Funds or Other Consideration.

      On May 21, 2012, BKF Capital acquired, in an open market transaction,
using its working capital, 169,164 shares of Common Stock at a purchase price of
$1.9667 per share or approximately $332,700.


Item 4. Purpose of Transaction.

            Item 4 of the Schedule 13D is amended by adding the following
disclosures:

      On May 18, 2012, BKF Capital delivered a demand letter to the Issuer
requesting the opportunity to inspect and make or receive copies of certain
records of the Issuer relating to, among other things, the names and address of
the Issuer's shareholders (the "BKF Demand Letter"). A copy of the BKF Demand
Letter is attached as an exhibit to this Schedule 13D.



Item 5. Interest in Securities of the Issuer.

     (a)(b) BKF Capital owns an aggregate of 2,234,520 shares of the Issuer's
Common Stock, representing approximately 18.2% of the total shares of Common
Stock deemed outstanding. Steven N. Bronson as the Chairman and President of BKF
Capital may be deemed to be the beneficial owner of the shares of Common Stock
held by BKF Capital. Mr. Bronson, as the sole owner of BA Value Investors, LLC,
beneficially owns an additional 57,700 shares of Common Stock, as to which he
possesses voting and disposition power. Accordingly, Mr. Bronson may be deemed
to beneficially own an aggregate of 2,292,220 shares of the Issuer's Common
Stock, representing approximately 18.7% of the total shares of Common Stock
deemed outstanding.

     (c) The following open market transactions were effected by BKF
Capital, since its most recent filing of a Schedule 13D:

                    Buy/            Number             Price
Trade Date          Sell          of Shares          Per Share
-----------------------------------------------------------------------------
5/21/2012            B             169,164            $1.9667


     (d) Not applicable.

     (e) Not applicable.


Item 6. Contracts, Arrangements, Understandings or Relationships with
        Respect to Securities of the Issuer.

        Not applicable.


Item 7. Material to be Filed as Exhibits.

        BKF Demand Letter


        After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Dated:  May 23, 2012

                             BKF Capital Group, Inc.

                            By: /s/ Steven N. Bronson
                                ----------------------------
                                Steven N. Bronson, President


                                Steven N. Bronson

                                /s/ Steven N. Bronson
                                ----------------------------
                                Steven N. Bronson

Attention: Intentional misstatements or omissions of fact constitute federal
           criminal violations (See 18 U.S.C. Section l001).



                                                                         EXHIBIT

                                                                  Reed Smith LLP
                                                          355 South Grand Avenue
                                                                      Suite 2900
[ReedSmith logo]                                      Los Angeles, CA 90071-1514
                                                                 +1 213 457 8000
                                                              Fax=1 213 457 8080
                                                                   reedsmith.com
Allen Z. Sussman
Direct Phone:  +1 213 457 8030
Email:  asussman@reedsmith.com



                                                       May 18, 2012



VIA FACSIMILE TO (805) 583-7749 AND OVERNIGHT COURIER
-----------------------------------------------------
Qualstar Corporation
3990-B Heritage Oak Court
Simi Valley, CA 93603
Attention: Nidhi H. Andalon, Secretary
---------

      Re: Demand for Stockholder Information

Dear Ms. Andalon:

      We  are  legal  counsel  to  BKF Capital Group, Inc. ("BKF"), which is the
holder  of more than ten percent (10%) of the outstanding shares of common stock
of Qualstar Corporation ("Qualstar").

      On  behalf  of  BKF,  we  hereby  demand,  pursuant to Section 1600 of the
California  General  Corporation  Law,  the  opportunity  to inspect and make or
receive copies of the following records and documents of Qualstar:

      (a)  A  complete  record  or list of the holders of Qualstar's outstanding
      capital  stock, certified by Qualstar or its transfer agent and registrar,
      showing the names and addresses of each holder of Qualstar's capital stock
      and  the  number of shares of capital stock registered in the name of each
      such  holder,  as  of  the  most  recent  date  available  at  the time of
      inspection.

      (b)  All daily stock transfer sheets showing changes in the record or list
      of  shareholders  referenced  in paragraph (a) above which are in, or come
      into,  the  possession  of  Qualstar  or the transfer agent for its common
      stock  through  and  including  the record date for the Special Meeting of
      Shareholders  of  Qualstar  scheduled  for  June  20,  2012  (the "Special
      Meeting").

      (c)  A  complete  record  or  list  of the names, addresses and securities
      positions  of  non-objecting  beneficial owners ("NOBO's") and acquiescing
      beneficial  owners  ("ABO's)  of  Qualstar's outstanding capital stock. If
      such  list  is  not  available  as  of  a recent date, such list should be
      requested   by   Qualstar  from  brokers  and  dealers  (or  their  agent,
      Broadridge),  pursuant  to  the  applicable  rules  and regulations of the
      Securities  and Exchange Commission, as of the record date for the Special
      Meeting.


      (d)  All  information  in  or  which  comes  into Qualstar's possession or
      control, or which can reasonably be obtained from brokers, dealers, banks,
      clearing  agencies  or  voting  trustees or their nominees, concerning the
      names,  addresses and number of shares of Qualstar's capital stock held by
      the participating brokers and banks named in the individual nominee names.



      (e)  All  information  in  or  which  comes  into Qualstar's possession or
      control,  or which can reasonably be obtained from nominees of any central
      depository system relating to the breakdown of all brokerage and financial
      institutions  holding  shares  for  their  customers  in street name and a
      breakdown of holdings which appear on the corporate stock ledger under the
      names  of  any  central  depository  system  (e.g.  the Depository Trust &
      Clearing Corporation (DTCC) and its nominee, Cede & Co.).


      (f)  A  list  or  lists  containing the name, address and number of shares
      attributable  to  any participant in any Qualstar employee stock ownership
      plan,  stock  ownership  dividend reinvestment plan, or comparable plan of
      Qualstar  in  which  voting  decisions  or decisions concerning tenders of
      shares  with respect to the shares held by such plan are made, directly or
      indirectly, individually or collectively, by the participants in the plan.


      (g)  A  magnetic  computer  tape,  compact  disc  or  diskette,  or  other
      electronic  file  containing  the  information requested in paragraphs (a)
      through  (f)  above,  together  with  such computer processing data and/or
      instructions  as  are  necessary  for  BKF  to  make  use of such magnetic
      computer tape, compact disc or diskette or electronic file, and a separate
      printout  of  such  magnetic computer tape, disc or diskette or electronic
      file   for  verification  purposes,  if  different  from  the  information
      furnished in response to paragraphs (a) through (f) above.

      BKF further demands that modifications of, additions to or deletions from,
any  and  all information, records or lists referenced in paragraphs (a) through
(g)  above  subsequent  to  the  date  of the items that are furnished to BKF be
furnished  when  the  same  becomes  available  to  Qualstar  or  its  agents or
representatives.

      BKF will bear the reasonable charges incurred by Qualstar (including those
of  its  transfer  agent)  in connection with the production of the information,
records and lists referenced in paragraphs (a) through (g) above.

      The  purpose  of  BKF  in  requesting  the  inspection  and copying of the
information  described  above  is  to  identify and facilitate a solicitation of
proxies from shareholders of Qualstar in connection with the Special Meeting.

      Please  contact  me  promptly  after receipt of this letter so that we can
arrange  for  inspection and/or delivery of these materials. I can be reached by
telephone at (213) 457-8030 or via email at asussman@reedsmith.com.


                                                   Sincerely,

                                                   /s/ Allen Z. Sussman

                                                   Allen Z. Sussman


cc:      Greg S. Heller
         BKF Capital Group, Inc.