There are "Blend", "Time" and "Repeat" controls and a 2 way switch which give more options in relation to the delay time. With the blend control you can easily manipulate the amount of audible delay effect, while Time alters the amount of time between playing, and hearing the delay. Repeat lets you control the trail of the effect; at 0 there is no trail, at higher settings there are multiple delays, each subsequent one played at a lower volume. Switching between 600/1100ms lets you further control the amount of delay.
Turning repeat all the way up allows you to create some crazy experimental feedback effects.
It has a pleasing warm sound, similar to a tape echo but without the tape hiss. Gives a nice lush/rich delay and is capable of shorter delays controlled by a switch. For the money, you really can't go wrong. The fact that it both does a good job at emulating the analog delay sound and behavior, as well as providing an exceptionally long delay time, makes this a top contender for any guitarist on the market for an inexpensive delay pedal.
Overall, a lot of people say that Biyang's Baby Boom series is quite good, and if the Time Machine delay is anything to go by, the are definitely right.
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