The SV3015: Pure Tube Tone and Power
The SV3015 is a Stereo Valve Power Amplifier that provides switchable 30 or 15 watts of pure tube tone and amplification designed for recording and touring musicians that demand the uncompromising sound and feel of a pure tube output stage in a convenient 2RU chassis.

And while the SV3015 rounds out the HLH Series amp system by providing tube power for your extension speaker cabinets (HLH 312 or the SWITCHBACK™ 212), it was also designed with another important application in mind: hybrid guitar setups consisting of modeling preamps and tube power amplification.

Modeling Preamps
With their variety of bang-for-buck tonal simulations, modeling preamps have come a long way. But for discerning musicians, they often fall short of delivering the authentic performance of a real tube guitar amplifier. Why? The simple answer is that it would probably take literally millions of hours to effectively simulate the finer aspects of even one single amplifier. We're talking about things such as current flow, voltage swing (several hundred volts!), tube types, bias settings, transformers, circuit impedances, speaker construction, cone excursion (you know, actually pushing air!), room acoustics etc. While it could be done, the variety-to-cost ratio wouldn't make much sense.

Hybrid Approach to Guitar Tone
Early-era modeling amps provided great value in an affordable package that included a solid-state power amp attached to speakers. They sounded good by themselves but often got lost in the mix when playing with a band. Most "modeling purists" have concluded that the answer is to go hybrid. Shape your tone with a modeling preamp of your choice, then connect it to a tube power amplifier and extension speaker cabinet. Now you've got tone shaping variety on the front end connected to a tube amplifier and speaker with actual electrons and air molecules flowing!

While there are several power amps and extension speakers on the market, most are either too expensive, too loud, too bulky, or just simply lack the right features needed by today's modern musician. Enter the SV3015...

Intuitive
Operating the unit is simple: each discreet channel is equipped with individual controls for Volume, Presence and "PUSH." The PUSH control is a 3RD POWER innovation that provides low-frequency enhancement allowing you to dial in the perfect amount of rich bottom-end tone.

Versatile
Each discreet EL34 (or optional 6L6) output section includes a selectable Power Mode (30 watts/15 watts), Impedance (16 ohm/ 8 ohm) and Phase reversal. Imagine configuring your setup to operate one channel at full power for clean sounds (more clean headroom), the other set at 15 watts for overdrive sounds (more output stage compression and harmonics)... now a jaw-dropping reality with the SV3015!

Have you ever plugged into a multi-amp setup and found the end result to be a mushy, hollow sound? It was most likely due to a phase mismatch between amplifiers. The SV3015 makes certain that you can optimally run your modeling setup in conjunction with other guitar amps. So, when the moment arises that you need to play through a multi-amp setup, you'll be good to go without any weirdness in your phase.

Please Note: The SV3015 is made to order so lead time on availability is 4 - 6 weeks.

FEATURES:
• Selectable Output Power (30/15 watts) allowing you to get rich "open" tube output tone without the fear of being too loud
• 180º Phase Switch on each speaker output so you can confidently match other tube amplifier setups
• Innovative PUSH control for low frequency enhancement
• Optimized for use with our HLH 312 or SWITCHBACK™ 212 extension speaker cabinets
• Versatile, discreet output sections can be configured to operate in pairs of either EL34 or 6L6 output tubes
• Front Panel Input for Channel A making setup a snap when using with the *ELEVEN RACK modeling preamp from Digidesign
• Made in the USA