Is teac avr 21g a power amplifier or just an amplifier

Yes, it is possible to add a Sumo amplifier to a Denon AVR (Audio/Video Receiver) system. The Denon AVR is designed to be the central hub for audio and video processing, providing amplification and routing signals to speakers and other audio devices.
To add a Sumo amplifier to your Denon AVR system, you can follow these general steps:
1. Determine the audio output options on your Denon AVR: Check if your Denon AVR has preamp outputs, which are typically labeled as "Pre Out" or "Main Out." These outputs are used to connect external amplifiers like the Sumo amp.
2. Identify the input options on the Sumo amplifier: Check the inputs available on the Sumo amplifier. It should have an input that matches the output from your Denon AVR. The most common connection is RCA, but there could be other options like XLR or optical.
3. Connect the Denon AVR to the Sumo amplifier: Use appropriate cables to connect the preamp outputs of your Denon AVR to the inputs of the Sumo amplifier. For RCA connections, you will need RCA cables with male connectors on both ends. Make sure to match the left and right channels correctly.
4. Configure the Denon AVR: Once the connections are made, you may need to configure the Denon AVR to use the external amplifier. Check your Denon AVR's manual or menu settings to disable the internal amplifier for the connected speakers. This will ensure that the AVR sends the audio signal to the Sumo amp instead.
5. Set up the Sumo amplifier: Follow the instructions provided with the Sumo amplifier to set it up correctly. This may involve adjusting gain levels, selecting input sources, and configuring any other settings specific to the Sumo amp.
6. Test and enjoy: Once everything is connected and configured, test the system by playing audio through your Denon AVR. The audio signal should be amplified by the Sumo amplifier and sent to your speakers, providing enhanced power and performance.
It's worth noting that the specific steps and options may vary depending on the models of your Denon AVR and Sumo amplifier. It's always recommended to consult the user manuals for both devices and, if needed, seek assistance from an audio professional or the manufacturers' support teams for detailed guidance tailored to your specific equipment.

This MIGHT help a little

Question edited for clarity.

https://www.google.com/search?q=TEAC+AVR+21G+doesn%27t+power+ON

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May have a shorted output section, bad speaker or speaker wire.

which model how old

if totally dead no lights up
gee
power source failure
any inbuilt fuse ?
shorted out wall plug

if there was a buzz or click or hum to speakers
would give it some hope

Your amplifier more than likely has DC Offset, a damaged amplifier. If you are interested in having your Teac repaired, please refer to my website, audioserviceclinic.com. You may contact me there. Thank you.

You can use any speakers you like but you will need an amplifier or powered speakers as the tape deck itself does not have an amplifier in it for speakers.

rush it to a service centre as something has blown on it it is protecting the speakers from damage

Could be a fuse, or a connection from the power supply to the circuit board. Where is this installed? Has it taken any abuse? If it just sits idle and doesn't move, it could be a fuse, and it could be a circuit board. The biggest problem is it's TEAC...haha, just kidding.

you have a defective power output, you have to replace it.