There are 2 heads (THR100H and THR100HD). The D being dual channel. 25/50/100W. Looks a lot like the Blackstar TVP stuff except with the added ability to choose Class A vs A/B poweramp, and the poweramp selection is on the back panel. There are also 1x12 and 2x12 cabs (THRC112 and THRC212). No tubes.
A couple of features caught my attention. One, third party IRs on the direct outputs. Yes! Another feature is that on the THR100HD you can run both channels at the same time on separate outputs, thereby simulating 2 amps in stereo. The THRC212 cab is a stereo cab, so you can run both amp sims into that cab. You can even connect 2 separate guitars to run both channels to separate cabs.
- Includes a 5-button footswitch for the HD, 3-button footswitch for the H (boost, reverb, effects).
- No effects other than reverb. The original THR has Chorus, Flanger, Phaser, Tremolo, & Delay.
- Class D power amp, just like the Quilter Aviator solid-state amps.
- Has a cooling fan and a thermal protection system that shuts it down if it gets too hot.
Features
• Lightweight and compact amp head delivers the sound and tone, as well as volume, sound pressure
level, and dynamics you would expect from professional quality tube amplifiers.
• Yamaha’s exclusive VCM Technology provides virtual modeling of both preamp and power
tube sections delivering a wider range of sound tailoring combinations for more detailed and
unique tone creation.
* What is VCM Technology?
An original physical modeling technology developed by Yamaha, VCM Technology reproduces the characteristics of
analog circuitry at a micro level to accurately reproduce the modeled equipment.
• Equipped with the same high-quality reverb as found on Yamaha’s high-end mixers.
•Newly developed Class-D power amplifier faithfully reproduces the specific operating characteristics
of a tube amp, letting you experience authentic tube sound pressure level and dynamics.
•The THR100HD features a Dual Amplifier design that lets you create sound with two amplifiers
from a single head unit. This feature is also useful for providing separate amplification for two
electric guitars, letting two people perform simultaneously.
•A speaker simulator on both the LINE OUT and PHONES jacks replicates the dynamic, airy
tone of a speaker cabinet recorded in a studio with a microphone, letting you enjoy studio
quality tone through the direct line signal. Third-party IR data* for cabinet and microphone
types can also be used providing an even wider array of cabinet/micing combinations for
sound creation.
* IR data refers to speaker response data (impulse response).