The DA-250F from Toa Electronics is a high-quality 1RU digital amplifier designed for installed applications. It offers four channels of input and output, with removable terminal block inputs and a screw terminal strip for outputs. In addition to standard four-channel operation, the unit can be set to bridge mode, giving the unit two high-power output channels. If desired, the first input channel signal can be routed to all four outputs, perfect for multi-zone paging.

The front of the unit provides large control knobs for input level control, as well as LEDs to show input, output, power, peak, and protect status. The built-in protection circuitry protects against damages from short circuits, overloads, and overheating. Class-D circuitry provides excellent audio quality and allows the DA-250F to operate at 85 percent efficiency, so it consumes almost 1/3 less power than analog amplifiers.

Sleek, 1RU unit fits into any standard audio rack

Four channels of I/O, perfect for multiple zones

Selectable bridge mode provides two high-power outputs

Terminal block inputs and a screw terminal strip for outputs make it easy to connect equipment

The channel 1 input may be routed to all outputs, perfect for paging

Class-D circuitry for great audio quality and efficiency

Independent power supply for each channel

Simple interface with front-panel level control knobs

Protection circuitry for short circuits, overheating, and overloads

Status LEDs for power, input, output, peak, and protect

Removable dust filters for easy cleaning

Related Questions and Answers

Q: 1. this unit does not have a encoder right??

A: The video switcher does not come with a built-in encoder.

Q: 2. On the Yamaha website it says it supports 4K/120 and 8K/60. Yet you state the opposite. Which is it?

A: On the Yamaha website it states that this AV receiver will support 4K120 and 8K60 HDMI and HDR10+ with a future update.

Q: 3. can I buy it suited for a 240v grid?

A: The Yamaha AVENTAGE RX-A6A receiver model that we offer is built for compatibility in North America only.

Q: 4. Can all features on this lens be used when mounted on Pentax K-01

A: Yes this lens is compatible and will work with the Pentax K-1.

Q: 5. Does (IF) mean interior focus?

A: IF means internal focus. So the length of the lens does not change as it focuses. (length does change when you zoom though)

Q: 6. Does this come with a microphone for set up?

A: According to the 'In The Box' contents, it will come with a 'YPAO Setup Microphone'.

Q: 7. My audio and video are out of sync. Is there a fix?

A: Yes there is an audio delay function built into the switcher. This will allow you to adjust the timing of the audio to match your video. please check page 22 of the manual for more information.

Q: 8. Can this connect to blue-tooth headphones as well as the 5.0 surround speakers?

A: Yes

Q: 9. Is there any way to format memory card which is being inserted in the slot for recording?

A: The AVMATRIX PVS0615U Portable 6-Channel Switcher with USB Streaming & 15.6" Display does not format SD cards. You would need to format the SD card in a computer to exFAT or FAT32 to use with the switcher.

Q: 10. Would this unit be loud enough for a large room/community hall? (I plan to use highly efficient speakers like the Yamaha CBR12.)

A: The Yamaha AVENTAGE RX-A6A 9.2-Channel MusicCast A/V Receiver is a very strong receiver with 150 watts per channel. This will cover a fairly large area, all depending on the speakers. The Yamaha CBR12 would not connect to this receiver directly as it uses 1/4" speaker connections.