You need raw-power? You’re looking for an end box with muscles. Seven channels of pure power. That could be another surprisingly difficult job. Most multi-channel power amplifiers deliver powerful power on one channel, but as soon as you start using multiple channels at the same time… We have a power amplifier that has seven channels and 150 watts per channel can continue to deliver. And that for about 4,650 euros. We are testing the B&K Components HTA 7.150
We’ve had to spend quite a long time looking for who and what B&K Exactly is. However, the American electronics company has quite strong roots in Custom Install and AV. Also in the low-cost segment. Now B&K hasn’t been in the Netherlands very long. Klankbart is the first – and only – distributor of the brand. He gave us the HTA 7,150. A seven-channel power amplifier with 150 watts Class AB per channel.
The mastermind behind the HTA 7,150 is Morris Kessler. No, not the mafia boss who already had a point in his life when he was 23 and has his own wiki page, but the amplifier designer who has a lot of designs to his name. Including models of Marantz, Crestron…
The basis of the HTA 7,150 lies in a large toroidal power supply that feeds seven class AB amplifier stages. The whole is DC coupled and with a global current feedback-loop. On the back we find balanced and unbalanced inputs. the setup is fully balanced (according to the specifications): “featuring a fully-balanced topology including dual DC servos and current feedback,”. So there should be no loss due to an op-amp in the signal path when using the balanced inputs. However, the pictures show a TI LF353 from the balanced input. We haven’t tested single ended (the Illusonic has no single ended outputs), but our experience is that single ended sounds better in these cases.
It goes without saying that the inputs are neatly labeled, so there is no ambiguity around which channel is meant for which speaker. We used the amplifier in 5.0 setup.