<PAGE>
------------------------------------------------------------------------------
                        SECURITIES AND EXCHANGE COMMISSION
                              Washington, D.C. 20549
                                   ----------
   

    
                                    FORM 10-K/A
                                  Amendment No. 1
(Mark One)
             [X] Annual Report Pursuant to Section 13 or 15(d) of
               the Securities Exchange Act of 1934 [Fee Required]
                  for the fiscal year ended March 29, 1997
                                       or
               [] Transition Report pursuant Section 13 or 15(d)
               of the Securities Exchange Act of 1934 [No Fee Required]
               for the transition period from ___________ to ___________

Commission File No. 33-9875
                                 ______________________
                                 BOSTON ACOUSTICS, INC.
                 (Exact name of registrant as specified in its charter)

Massachusetts                                            04-2662473
(State or other jurisdiction                             (I.R.S. employer
   of incorporation or                                   identification no.)
      organization)

300 Jubilee Drive
Peabody, Massachusetts                                  01960
(Address of Principal Executive Offices)                 (Zip Code)

                                       (508) 538-5000
                     (Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

         None.

Securities registered pursuant to Section 12(g) of the Act:

                   6,000,000 shares of Common Stock ($.01 Par Value)
                                    (Title of Class)


Indicate by check mark whether the registrant (1) has filed all reports 
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 
1934 during the preceding 12 months (or for such shorter period that the 
registrant was required to file such reports), and (2) has been subject to 
such filing requirements for the past 90 days.

                                             Yes [X]         No []

Indicate by check mark if the disclosure of delinquent filers pursuant to 
Item 405 of Regulation S-K is not contained herein, and will not be 
contained, to the best of registrant's knowledge, in definitive proxy or 
information statements incorporated by reference in Part III of this Form 
10-K or any amendment to this Form 10-K. []

The aggregate market value of the voting stock held by nonaffiliates of the 
registrant was $48,958,827 as of June 20, 1997.

There were 3,291,366 shares of Common Stock issued and outstanding as of June 
20, 1997.
------------------------------------------------------------------------------
                      DOCUMENTS INCORPORATED BY REFERENCE

(1)      Registrant's Annual Report to Stockholders for the fiscal year ended 
         March 29, 1997 (Items 5, 6, 7, 8 and 14 (a)(1))
(2)      Proxy Statement for Registrant's Annual Meeting of Stockholders to be 
         held on August 12, 1997 (Items 10, 11, 12 and 13)


<PAGE>


                                       PART IV
                                           
                                           
                                           
Item 14. Exhibits, Financial Statement Schedules and Reports on Form 8-K.

(a) The following documents are included as part of this report:

    (1) Financial Statements

    The following consolidated financial statements are incorporated by
    reference to the Registrant's 1997 Annual Report to Stockholders:

    Report of Independent Public Accountants.

    Consolidated Balance Sheets as of March 29, 1997 and March 30, 1996.

    Consolidated Statements of Income for the three years ended March 29, 1997.

    Consolidated Statements of Shareholders' Equity for the three years ended 
    March 29, 1997.

    Consolidated Statements of Cash Flows for the three years ended March 29,
    1997.

    Notes to Consolidated Financial Statements.

    (2) Financial Statement Schedules

    The following financial statement schedules are filed as part of this
    report and should be read in conjunction with the consolidated financial
    statements:
         

    Report of Independent Public Accountants on Schedules

    Schedule I -- Valuation and Qualifying Accounts


    Other financial schedules have been omitted because they are not required
    or because the required information is given in the Consolidated Financial
    Statements or notes thereto.

                                          10


<PAGE>

    (3) Listing of Exhibits
<TABLE>
         Exhibits
<S>         <C>         <C>
    3.A.      -    Articles of Organization (1)
    3.B.      -    Amendment to Articles of Organization (1)
    3.C.      -    Second Amendment to Articles of Organization (1)
    3.D.      -    Bylaws (1)
    4.A.      -    Specimen Share Certificate (1)
    10.A+     -    1996 Stock Plan adopted by Boston Acoustics, Inc. on
                   February 20, 1996, as amended (6)
    10.B.+    -    1986 Incentive Stock Option Plan adopted by Boston
                   Acoustics, Inc. on October 15, 1986, as amended (2)
    10.C.     -    Lease between Boston Acoustics, Inc. and Newburyport
                   Turnpike Associates Limited Partnership dated August 24,
                   1988 relating to office and manufacturing facilities (3)
    10.D.     -    First Amendment between Boston Acoustics, Inc. and
                   Newburyport Turnpike Associates Limited Partnership dated
                   March 23, 1994 relating to office and manufacturing
                   facilities (4)
    10.E#     -    Purchase Agreement dated March 27, 1997 by and between
                   Gateway 2000, Inc. and Boston Acoustics, Inc. (6)
    10.F      -    Boston Acoustics, Inc. Warrant naming Gateway 2000, Inc.
                   as registered holder. (6)
    10.G#     -    Letter of Agreement dated January 14, 1997 by and between
                   Gateway 2000, Inc. and Boston Acoustics, Inc. (6)
    13.   *   -    1997 Annual Report to Shareholders
    21.       -    Subsidiaries of the Registrant (6)
    23.       -    Consent of Independent Public Accountants (6)
    27.       -    Financial Data Schedule (6)
    99.       -    "Safe Harbor" Statement under Private Securities Litigation
                   Reform Act of 1995 (5)
</TABLE>
* Indicates an exhibit which is filed herewith.
+ Indicates an exhibit which constitutes an executive compensation plan.
# Indicates that portions of the exhibit were omitted pursuant to a
  request for confidential treatment.
________________

(1) Incorporated by reference to the similarly numbered exhibits in Part II of
File No. 33-9875.

(2) Incorporated by reference to the similarly numbered exhibit in Item 14 of
the Company's Annual Report on Form 10-K for the year ended March 27, 1993.

(3) Incorporated by reference to the similarly numbered exhibit in Item 14 of
the Company's Annual Report on Form 10-K for the year ended March 25, 1989.

(4) Incorporated by reference to the similarly numbered exhibit in Item 14 of
the Company's Annual Report on Form 10-K for the fiscal year ended March 26,
1994.

(5) Incorporated by reference to the similarly numbered exhibit in Item 14 of
the Company's Annual Report on Form 10-K for the fiscal year ended March 30,
1996.

(6) Incorporated by reference to the similarly numbered exhibit in Item 14 of
the Company's Annual Report on Form 10-K for the fiscal year ended March 29, 
1997.

(b)  Reports on Form 8-K:

No reports on Form 8-K were filed by the Registrant during the last quarter
covered by this report, and no other such reports were filed subsequent to March
29, 1997 through the date of this report.


                                          11


<PAGE>

                                      SIGNATURES
                                           
   
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, the Registrant has duly caused this report to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Peabody,
Commonwealth of Massachusetts, on the 11th day of November 1997.
    

                                            BOSTON ACOUSTICS, INC.
                                              (Registrant)


                                            BY: / s/Andrew G. Kotsatos
                                                --------------------------
                                                  Andrew G. Kotsatos
                                                  Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report
has been signed below by the following persons on behalf of the Registrant and
in the capacities and on the dates indicated.

Signatures              Capacities                              Date


   
s/Andrew G. Kotsatos     Director, Chief Executive               11/11/97
-----------------------                                         ----------
Andrew G. Kotsatos       Officer and Treasurer
    

s/Fred E. Faulkner, Jr.  Director, President and                 11/11/97
-----------------------                                         ----------
Fred E. Faulkner, Jr.    Chief Operating Officer


s/Debra A. Ricker-Rosato Vice President and                      11/11/97
------------------------                                         ---------
Debra A. Ricker-Rosato   Chief Accounting Officer


s/George J. Markos       Director                                11/11/97
-----------------------                                          ---------
George J. Markos


s/Lisa M. Mooney         Director                                11/11/97
-----------------------                                          ---------
Lisa M. Mooney
    

                                       12