CALGARY, Sept. 6 /CNW/ - Advantage Energy Income Fund (TSX: AVN.UN, NYSE:
AAV) ("Advantage" or the "Fund") and Sound Energy Trust ("Sound") today
jointly announced the successful completion of a plan of arrangement resulting
in the business combination of the two trusts. At a meeting of Sound's
Unitholders held in Calgary on September 5, 2007, 93 percent of the votes cast
were in favour of the transaction.
    As a result of the merger, Sound Trust units will be de-listed from the
Toronto Stock Exchange ("TSX") on or about September 10, 2007. Trust units of
Advantage will continue to trade on the TSX under the symbol "AVN.UN" and on
the New York Stock Exchange under the symbol "AAV".
    Furthermore, Advantage has assumed all of Sound's covenants and
obligations with respect to the outstanding Sound debentures. The debentures
will trade on the TSX under the symbols "AVN.DB.F" and "AVN.DB.G" for the
8.75% convertible unsecured subordinated debentures (the "8.75% Debentures")
and the 8.0% convertible unsecured subordinated debentures (the "8.0%
Debentures"), respectively.
    Advantage will make an offer to purchase all of the outstanding 8.75%
Debentures and 8.0% Debentures at a price equal to 101% of the principal
amount plus any accrued and unpaid interest. Details in respect of such offer
will be disseminated by a separate press release in the coming days.
    For further information regarding the benefits of the merger and to learn
more about Advantage, please visit our web site at www.advantageincome.com.

    Advisory

    The information in this press release contains certain forward-looking
statements. These statements relate to future events or our future
performance. All statements other than statements of historical fact may be
forward-looking statements. Forward-looking statements are often, but not
always, identified by the use of words such as "seek", "anticipate", "plan",
"continue", "estimate", "expect", "may", "will", "project", "predict",
"potential", "targeting", "intend", "could", "might", "should", "believe",
"would" and similar expressions. These statements involve substantial known
and unknown risks and uncertainties, certain of which are beyond Advantage's
and Sound's control, including: the impact of general economic conditions;
industry conditions; changes in laws and regulations including the adoption of
new environmental laws and regulations and changes in how they are interpreted
and enforced; fluctuations in commodity prices and foreign exchange and
interest rates; stock market volatility and market valuations; volatility in
market prices for oil and natural gas; liabilities inherent in oil and natural
gas operations; uncertainties associated with estimating oil and natural gas
reserves; competition for, among other things, capital, acquisitions, of
reserves, undeveloped lands and skilled personnel; incorrect assessments of
the value of acquisitions; changes in income tax laws or changes in tax laws
and incentive programs relating to the oil and gas industry and income trusts;
geological, technical, drilling and processing problems and other difficulties
in producing petroleum reserves; and obtaining required approvals of
regulatory authorities. Advantage's and Sound's actual results, performance or
achievement could differ materially from those expressed in, or implied by,
such forward-looking statements and, accordingly, no assurances can be given
that any of the events anticipated by the forward-looking statements will
transpire or occur or, if any of them do, what benefits that Advantage and
Sound will derive from them. Except as required by law, Advantage and Sound
undertake no obligation to publicly update or revise any forward-looking
statements.

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