The SLA-2 from ART is a rack mountable two-channel power amplifier designed for studio use. It offers a wide frequency response with very low noise and distortion for quality audio output. XLR, 1/4", and Euroblock input connectors are provided, along with five-way binding post outputs. Each channel has its own level control on the front panel.

The SLA-2 can operate in stereo or bridged mode, and features a ground-lift switch to eliminate hum caused by ground loops. The unit offers full protection circuitry for short circuits, overloads, and overheating. If any faults are detected, the amplifier will disconnect the outputs and automatically return to normal operation when the fault is fixed. The SmartFan cooling system offers silent fan-assisted convection cooling to keep the system running reliably.

1U steel housing

High quality audio with low distortion

Individual level controls for each channel

XLR, 1/4", and Euroblock inputs, 5-way binding post outputs

Stereo or bridged operating modes

Ground-lift switch for eliminating hum

LED indicators for power, signal, clip, and protect

SmartFan cooling system is fan-assisted for quiet, reliable operation

Protection circuitry prevents damage from overheating, overloads, and short circuits. It will disconnect the outputs when a fault is present, and resume normal operation when the fault has been removed

Related Questions and Answers

Q: 1. Is this lens compatible with a full frame camera body like the Canon EOS 6D?

A: No it is not in this instance. Sigma brand DC series lenses are the same as the Canon brand EF-S series lenses, in that they are designed and optimized to only work on the Canon APS-C series cameras. It is not compatible with a full-frame such as the 6D.

Q: 2. How does this lens compare to the Nikon 135mm DC f/2? I have the Nikon. Is it worth purchasing the sigma?

A: The Sigma 135mm f/1.8 DG HSM Art Lens for Nikon F would be a good choice for sports shooting, or shallow depth of field portraits. The biggest advantage over the Nikon f/2, is the f/1.8 may be a little sharper to the edges, when wide open.

Q: 3. Can this lens be used with the Canon 90D?

A: You would be able to use this lens with the Canon 90D.

Q: 4. Are they making a Sony E mount version?

A: soon

Q: 5. WHAT IS THE YEAR OF INTRODUCTION OF THIS LENS?

A: The Sigma 30mm f/1.4 DC HSM Art Lens began shipping in the Spring of 2013.

Q: 6. Will this lens work on a Canon 70D?

A: Yes, this lens is compatible with the Canon 70D. Due to the 1.6x crop factor of this camera, the focal length will become a 56mm.

Q: 7. Will this lens work with Sony A7 series cameras?

A: Unfortunately no, the Sigma 30mm f/1.4 DC HSM Art Lens for Sony is made for use with A-Mount Sony SLR cameras. It will not be compatible with E-Mount Mirrorless A7 series.

Q: 8. Does this lens work with a Canon EOS R6 Mark II mirrorless camera?

A: The Sigma 135mm f/1.8 DG HSM Art Lens for Canon EF is not compatible with the Canon EOS R6 Mark II mirrorless camera, which is an RF-mount camera. An adapter, such as the Canon Mount Adapter EF-EOS R (https://shorturl.at/bTyD3), could be used to adapt the Sigma 135mm f/1.8 DG HSM Art Lens for Canon EF to the Canon EOS R6 Mark II.

Q: 9. What is the T-Stop rating of this lens?

A: The Cine version of the Sigma 135mm which shares the optics with this lens is a T2. a href= https://www.bhphotovideo.com/c/product/1337409-REG/sigma_240966_135mm_t2_0_canon_ef.html target= _blank https://www.bhphotovideo.com/c/product/1337409-REG/sigma_240966_135mm_t2_0_canon_ef.html/a

Q: 10. Hello, I cannot find anywhere if this lens is compatible with 1. 4 or 2x converters. I am considering it as an alternative to my 70-200 but sometimes I might need more reach than 135mm?

A: No, this lens is not compatible with 1.4 or 2x converters.