Try to find speaker that are fairly efficient.I'm guessing that unit gives 10-15 watts per channel (just a guess) at the most.The specs they give are 25 watts at 1 khz @6 ohms only.
The power at 20-20,000 will be lower.8 ohm speakers with at least the low 90db minimum efficiently range might work ok.If you use anything less efficient may heat up the unit,or play to low.Manuel link>>♫[http://www.teac.com/resources/pdf/cr-h227i-b/CR-H227i_manual.pdf]
The power at 20-20,000 will be lower.8 ohm speakers with at least the low 90db minimum efficiently range might work ok.If you use anything less efficient may heat up the unit,or play to low.Manuel link>>♫[http://www.teac.com/resources/pdf/cr-h227i-b/CR-H227i_manual.pdf]