Innovative passive & active preamp technology
Tortuga Audio plans to release its new LDR300.V25 Buffered Preamp on August 28. The LDR300 is a remote controlled, singled-ended, active preamplifier that combines Tortuga Audio’s popular LDR (photoresistor) attenuation technology together with a powerful JFET output buffer to deliver robust sonics that will satisfy the most discerning audio enthusiast.
In this article we take a closer look at what’s going on behind the active vs passive preamp debate and hopefully develop a better understanding so we can all make wiser choices.
Designed around the excellent current production 6H30 tube, we’ve concluded that the TPB.V1 Tube Buffer is also compatible with the entire family of 9-pin 6DJ8 / ECC88 / 6922 / 7308 tubes which opens up a big wide world of tube rolling possibilities. And while the 6H30 is a great sounding tube for the Tortuga buffer, I’m already convinced that some of these alternative tubes will yield sonic improvements. …
Update – March 1, 2017 – The TPB.V1 Hybrid Tube Preamp Buffer has been released. A review of the TPB.V1 can be found here.