![]() It reduces the available power of the amp and runs the tubes hard, meaning shorter tube life and failures via "shorts". What most companies call Auto Bias is actually "Cathode Bias"- A commonly used method that is cheap to make, and often found in guitar amps, but also $20,000 high end audio amps. Make an instant comparison while you listen and choose what you like best for that song or album. PrimaLuna engineers in Holland designed an ingenious circuit that lets you change from triode to ultra-linear with a push of a button on the supplied remote control. The best option is to have both triode and ultra-linear. They have greater “pop” with a bigger difference between light and dark, and loud and soft. But triode amps have limitations! Ultra-linear has more extension on the top and bottom, not to mention greater power. Triode and Single Ended Triode (SET) amps are popular for their warmer, fuller, and easy to settle into sound. Remote controlled Triode/Ultra-linear Switchingĭo you have some classic rock albums you used to love so much that have now ended up left on the shelf, un-played for years? How about jazz or classical recordings from the 60’s? Every audiophile has albums that they used to play, but stopped because they are harsh, brittle, or bright. PLUS you get the benefit of increased dynamics. Now your subwoofer and speakers are seeing the exact same signal, singing the exact same tune, for perfect coherence. Switchable from stereo to mono, we run right off the speaker taps of our amazing wide-bandwidth output transformers to a voltage-divider network and lower output to line level. That’s why the subwoofer out on the EVO300 and 400 integrated amplifiers are transformer coupled. The result? Reduced dynamics.īut there are some very good subwoofers that only have an RCA line-level input. In addition, most integrated amps have a subwoofer out that is not as robust as using the line out from a preamp. Now both speakers and sub get the same “flavor” and are easier to integrate together. That’s why REL, the premier manufacturer of subwoofers, prefers using a “Speakon” connector hooking up their subwoofers to the same terminals the speakers are hooked up to. When you run the subwoofer at “line level” while your main speakers are hooked up to the amplifier, the signals have a different character or “transfer”. The number one problem people face when adding a subwoofer is integration to the main speakers. PrimaLuna integrateds are the favorite of owners who use everything from Audeze to Hifiman to Sennheiser! We simply took advantage of the fact that we make the best tube integrated amplifiers. Now you don't have to pay for a separate state of the art headphone amp. ![]() ![]() Other brands, including those costing $5,000 or more like Mal Valve, will use larger output tubes, then use a voltage divider network to drop the power down to an acceptable level for headphones. ![]() Headphones are simply small speakers that require less power. Some amps will use smaller output tubes that groan to have enough dissipation to run power-hungry planar headphones. Stand alone tube headphone amps will vary in quality like any other tube amp. And the only amp that lets you listen with either the warmth of Triode or the wide-bandwidth of Ultra-linear operation at the push of a button! Most tube integrated amps and preamps use a solid state op-amp chip for running headphones. One of the best headphone amps in the world. All Tube Output Transformer-Coupled Headphone Amplifier
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