Emotiva Introduces SA-250 Limited Edition Studio Reference Power Amplifier

December 9, 2014


The Emotiva Stealth SA-250 Studio Reference Power Amplifier gives you two channels of superb low noise, low distortion amplification, coupled with an unbeatable selection of pro features, all in a single professional caliber package. The result of this exceptional technical performance, combined with the SA-250’s massive faceted aluminum face plate and over-built chassis, is a truly iconic amplifier. The SA-250 is a unique overachiever, equally at home in a top-notch home audio system or a high-end mastering studio. If you’ve been searching for a truly exceptional two-channel power amplifier, look no further.

Audiophile Sound

First and foremost, the SA-250 is a stellar performer. Of course, the SA-250 has excellent specifications, but by now you know that specs don’t tell the whole story. Perfectly stable; pristinely pure, almost limitless power; stunning dynamics rising from a black background; never the slightest hint of strain or signal compression; absolute composure under even the most stressful operating conditions. Those phrases can only begin to describe the Stealth SA-250. You must experience it for yourself.

Stealth Construction and Styling

The SA-250 sports a heavy-gauge reinforced solid steel chassis with extensive internal bracing. The front panel, machined from a solid slab of aluminum and finished in jet-black, looks like it was pulled from a military aircraft – or maybe some futuristic weapon. The power button is also black, to reduce visible distractions, and even the channel status LEDs can be switched off for silent running.

Professional Features

We’ve included a full complement of professional features in the SA-250. Balanced inputs are combination XLR and ¼” jacks; unbalanced inputs are solid machined gold-plated RCA panel jacks; and speakers connect via heavy-duty gold plated audiophile grade binding posts. Each channel has its own fully independent input selector, ground lift switch, and gain control switch. For convenience and practicality, the SA-250 runs on either 120 VAC or 230 VAC, uses a standard IEC power cord, and can control, or be controlled by, other standard trigger-enabled equipment.

Under the Hood

Inside, a super heavy duty power supply, featuring a 1200 VA toroidal power transformer with dual secondary windings, rectifiers, and 40,000 uF of independent, low ESR energy storage for each channel, providing high inter-channel isolation and ensuring that the SA-250 never runs out of power. Our fully discrete, highly optimized dual differential, high current, short signal path Class A/B amplifiers modules deliver massive power with vanishingly low distortion and noise; premium components throughout promise you years of quality service; and, on the off chance that something does go wrong, our unprecedented five year transferable warranty has you covered.


• Fully discrete Class AB topology ensures smooth, detailed sound and incredibly natural imaging while maintaining efficient performance
• Oversized toroidal power transformer with dual secondary windings and independent power storage capacitors for each channel provides plenty of real power for demanding program material, with virtually unlimited power reserves, and vanishingly low crosstalk.
• Top quality parts and construction throughout for years of reliable service.
• Stealth styling, featuring a faceted face plate milled from solid 1” billet aluminum.
• Front panel LEDs continuously display the SA-250’s status and indicate fault conditions.
• Stealth mode lets you disable the status LEDs for discreet operation.
• Professional quality 3RU chassis provides strength and durability.
• Independent metal toggle switches allow you to separately configure each channel to use the balanced or unbalanced input for maximum flexibility.
• Independent gain selection for each channel lets you perfectly match the SA-250 to a wide variety of front end equipment.
Gold plated five-way speaker binding posts with clear shields allow you to use a wide range of speaker cables with bare wires, lugs, or banana plugs.
• Solid machined gold-plated unbalanced RCA input connectors provide a tough, reliable connection with a wide variety of audio interconnects.
• Combination 1/4” and XLR balanced inputs provide compatibility with a wide variety of audiophile interconnects and standard studio connections.
• Individual ground lift switches allow you to independently lift the ground connection of the balanced input on each channel to solve tricky hum problems and eliminate ground loops.
• Remote trigger input and output allow the SA-250 to be turned on by trigger-enabled equipment, and to activate other trigger-enabled equipment.
• Audiophile-grade fault protection is entirely transparent under normal conditions, yet protects the amp and your other equipment from all common fault conditions.
• Universal AC line voltage operation; 115 VAC or 230 VAC (user selectable).
• Standard IEC power inlet fits all standard and audiophile IEC power cables.
• Fully transferable five-year warranty.


• Channels: 2
• Topology: fully discrete, highly optimized dual differential, high current, short signal path Class A/B with premium components throughout.
• Power output (both channels driven): 

• 400 watts RMS per channel @ 4 ohm (0.1% THD)

• 250 watts RMS per channel @ 8 ohm (0.08% THD)
• Rated power bandwidth: 20 Hz to 20 kHz +/- 0.1dB
• Broadband frequency response: 5 Hz to 80 kHz, +0 / -1.5dB
• Amplifier gain: user selectable 23 dB or 29 dB
• Input sensitivity for rated power: 3.2 V
• Damping factor: >500
• Signal to Noise ratio: 
1 watt: > 96 dB
; Full power: > 120 dB
• Input impedance: 
unbalanced: 23.5kohms; 
balanced: 33 kohms
• Power supply: 
1,200VA toroidal transformer with dual secondary windings
; 80,000uF of low ESR storage capacitance (40,000 uF for each channel)
• Input impedance:
 30 kOhms (balanced); 
23.5 kOhms (unbalanced)
• Size: 
unboxed: 17” wide x 5-3/4” high x 19-1/2” deep
; boxed: 23″ wide x 11″ high x 25″ deep
• Weight: 58 lbs (64 lbs boxed)
• MSRP: $1399

Source: Emotiva