Monday, January 4, 2016

D’Agostino Momentum S250 Stereo Amplifier

Dan D’Agostino Master Audio Systems Upgrades Momentum Stereo Amplifier to Momentum S250 Performance Level

Flagship stereo amplifier upgraded with advanced circuitry and 250W power output

CAVE CREEK, AZ, JANUARY 4, 2015 — Dan D’Agostino Master Audio Systems, the company founded by famed audio designer Dan D’Agostino, is releasing a major upgrade to the company’s flagship Momentum stereo amplifier. Recently, Dan D’Agostino Master Audio Systems announced the M400 upgrade to the Momentum monaural amplifier. Now, these upgrades have been applied to the Momentum Stereo amplifier resulting in the new Momentum S250.

As with the Momentum M400 mono, the new Momentum S250 stereo amplifier receives a power upgrade, now delivering 250 Watts/channel into 8 Ohms. This is up from the original 200 Watt/channel specification. A 20% increase in transformer size, now 1,800VA, provides the engine for this output power increase. Connected to this larger power source is a new output stage design that includes a number of major enhancements.

The driver section has received a major revision and now features a fully complementary signal path with individual transistors employed for the positive and negative halves of the musical signal. Current drive is nearly doubled which feeds a new output stage with an open loop gain increased by the same factor of two.

“After hearing the benefits these enhancements made to the Momentum monos, I felt compelled to add them to the Momentum stereo amplifier.” said Dan D’Agostino. D’Agostino continues, “Even more exciting is that we can offer these upgrades to original Momentum stereo amplifier customers.”

The Momentum S250 employs the same chassis with a small aesthetic design change to the copper feature on the faceplate sides. Additionally, the meter now displays a scale appropriate for the greater power output.

Current Momentum stereo amplifiers can be upgraded to the Momentum S250 performance level. Included in the upgrade is the new 250 Watt meter plate and all electrical component upgrades.

The retail price for the upgrade is $7,500 and is performed at the Dan D’Agostino Master Audio Systems facility in Cave Creek, AZ.