Active vs Passive Preamp

The Active vs Passive Preamp Debate If you peruse a few online audio forums you will ineveitably find high performance audio enthusiasts disagreeing on many audio subjects. It’s what we do. One such topic is the debate over which type of preamp is better – active or passive? Someone tries a passive preamp, is less than thrilled with the result, and thereafter relates their experience to others either explicitly …. Read More >>

6922/6DJ8 tubes for tube rolling

Tube Rolling The Tortuga Tube Buffer

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. …. Read More >>

active dsp crossover

The Case for Active DSP Crossovers

Active DSP Crossovers Are The Future! Nearly all speakers require crossovers.  Historically crossovers have been passive. From the lowliest 2-way budget box to those 10 foot tall high-end monster cabinets you see in shows and magazines that cost as much as an average house – passive crossovers. Despite the ubiquitous nature of passive crossovers, active crossovers are in fact better than passive crossovers in almost every way except for …. Read More >>

simplied schematic of Tortuga Audio's tube preamp buffer

Is A Preamp Buffer Right For You?

What Is A Preamp Buffer? To answer the question “What is a preamp buffer?” let’s start with a preamp that has no buffer,  i.e. a passive preamp. At a minimum, a passive preamp provides volume control (attenuation). Optionally, a passive preamp can also provide input switching between multiple connected sources. Passive preamps control volume by using either a potentiometer (i.e. “pot”), a stepped attenuator (series of switched resistors)  or, …. Read More >>

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