From the
BJCP website:
PALE ALE
Aroma: Usually moderate to strong hop aroma from dry hopping or late kettle additions of American hop varieties. A citrusy hop character is very common, but not required. Low to moderate maltiness supports the hop presentation, and may optionally show small amounts of specialty malt character (bready, toasty, biscuity). Fruity esters vary from moderate to none. No diacetyl. Dry hopping (if used) may add grassy notes, although this character should not be excessive.
Appearance: Pale golden to deep amber. Moderately large white to off-white head with good retention. Generally quite clear, although dry-hopped versions may be slightly hazy.
Flavor: Usually a moderate to high hop flavor, often showing a citrusy American hop character (although other hop varieties may be used). Low to moderately high clean malt character supports the hop presentation, and may optionally show small amounts of specialty malt character (bready, toasty, biscuity). The balance is typically towards the late hops and bitterness, but the malt presence can be substantial. Caramel flavors are usually restrained or absent. Fruity esters can be moderate to none. Moderate to high hop bitterness with a medium to dry finish. Hop flavor and bitterness often lingers into the finish. No diacetyl. Dry hopping (if used) may add grassy notes, although this character should not be excessive.
Mouthfeel: Medium-light to medium body. Carbonation moderate to high. Overall smooth finish without astringency often associated with high hopping rates.
Overall Impression: Refreshing and hoppy, yet with sufficient supporting malt.
Comments: There is some overlap in color between American pale ale and American amber ale. The American pale ale will generally be cleaner, have a less caramelly malt profile, less body, and often more finishing hops.
Amber Ale
Aroma: Low to moderate hop aroma from dry hopping or late kettle additions of American hop varieties. A citrusy hop character is common, but not required. Moderately low to moderately high maltiness balances and sometimes masks the hop presentation, and usually shows a moderate caramel character. Esters vary from moderate to none. No diacetyl.
Appearance: Amber to coppery brown in color. Moderately large off-white head with good retention. Generally quite clear, although dry-hopped versions may be slightly hazy.
Flavor: Moderate to high hop flavor from American hop varieties, which often but not always has a citrusy quality. Malt flavors are moderate to strong, and usually show an initial malty sweetness followed by a moderate caramel flavor (and sometimes other character malts in lesser amounts). Malt and hop bitterness are usually balanced and mutually supportive. Fruity esters can be moderate to none. Caramel sweetness and hop flavor/bitterness can linger somewhat into the medium to full finish. No diacetyl.
Mouthfeel: Medium to medium-full body. Carbonation moderate to high. Overall smooth finish without astringency often associated with high hopping rates. Stronger versions may have a slight alcohol warmth.
Overall Impression: Like an American pale ale with more body, more caramel richness, and a balance more towards malt than hops (although hop rates can be significant).
Comments: Can overlap in color with American pale ales. However, American amber ales differ from American pale ales not only by being usually darker in color, but also by having more caramel flavor, more body, and usually being balanced more evenly between malt and bitterness. Should not have a strong chocolate or roast character that might suggest an American brown ale (although small amounts are OK).
I am, however, of the school that rules were made to be broken.:rockin: