I hate the DB750... is that an amp?

But seriously, you mentioned the SVT so you might want to also take a look at the new SVT VR and if you are into the hybrid, look at the new 8 pro.
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Ampeg Debuts the SVT8Pro Amp Head at NAMM
New Pro Series head features an innovative emulation circuit that
recreates the signature growl of classic tube-driven SVTs.
Anaheim, Calif.—January 19, 2006, NAMM: Ampeg is using the NAMM show to debut a new head in their SVT Pro Series of bass heads—the SVT8Pro.
The new SVT8Pro combines a vintage SVT preamp, complete with two 12AX7 and two 12AU7 tubes, with a powerful 2500-watt switch-mode Class D amplifier into an amazingly lightweight 23-pound package. As a result, the compact two-rack-space SVT8Pro delivers more power per pound than any other SVT Pro Series head.
Like all SVT Pro Series heads, the SVT8Pro’s front panel controls include Mute, and expanded EQ section for fine-tuning your sound. In addition, the SVT8Pro also features a unique power amp emulation circuit that allows users to dial in the signature “growl” of an overdriven tube amp, but at any volume and with varying intensity.
All Ampeg Pro Series heads also feature variable speed fans, DC supplied tube filaments for noise-free performance, and Neutrik Speakon connectors for quick set up and better conductivity.
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Ampeg Announces New SVT-VR Vintage Reissue of Classic 70’s SVT Head
Anaheim, Calif.— January 19, 2006, NAMM: For more than 50 years, Ampeg has been designing products for astute and discriminating musicians around the world. For 2006, Ampeg is reaching into its illustrious past to offer the SVT-VR, a vintage reissue of the highly sought after 1970’s “blue-line” SVT head.
With the new SVT-VR, the Ampeg engineering and product development teams had one primary goal—get as close to the coveted tone of the “classic” SVT as possible. As a result, the preamp stage, power section, and even the rocker switches of the new SVT-VR emulate the exact signal path, tone, and vibe of the original rock ‘n’ roll workhorse.
“The original ‘blue-line’ SVT has a tremendous legacy,” explained Ampeg Product Manager, Tommy Wilson. “It remains one of the most respected and sought-after Ampeg products of all time. For years, artists at all levels have been asking us to re-issue the vintage design. Of course, we didn’t want to take on such an important project until we were absolutely confident we could recreate the tonality of the original.”
So important was their desire to recreate the classic SVT sound, that the Ampeg development team enlisted the help Dennis Kager, a member of the original Ampeg QC team and operator of a New Jersey-based restoration facility specializing in vintage SVT heads.
“Having been affiliated with Ampeg products for nearly four decades, I’m very encouraged by Ampeg’s commitment to the original design and their desire to accurately recreate its sonic signature,” commented Kager. “I’ve long known that there is a tremendous market for this product and I’m honored to have been involved in the development of the vintage reissue.”
The all tube SVT-VR amplifier is driven by a total of six 6550 power tubes for massive power and tone. In addition to the 70’s style dials and rocker switches, the SVT-VR’s preamp circuitry has been faithfully recreated to match the original. Even the classic blue graphics are there—affirming Ampeg’s commitment to the amp’s legacy.
The Ampeg SVT-VR is currently available and carries a manufacturer’s suggested retail price of $2,799.00.