The Infinity Q Junior, also known as Quantum Jr., is a loudspeaker model produced by Infinity between 1978 and 1980 in Germany. It was priced at approximately 875 DM at launch. The Q Junior is part of a series that includes other models like the Infinity QRS and Infinity Quantum 3. Known for its distinct design and construction, the Q Junior features several advancements typical of Infinity's engineering during that era, targeting audiophiles looking for quality sound reproduction.

The Infinity Q Junior, also known as Quantum Jr., is a loudspeaker model produced by Infinity between 1978 and 1980 in Germany. It was priced at approximately 875 DM at launch. The Q Junior is part of a series that includes other models like the Infinity QRS and Infinity Quantum 3. Known for its distinct design and construction, the Q Junior features several advancements typical of Infinity's engineering during that era, targeting audiophiles looking for quality sound reproduction.