Aguilar DB 728

All Tube Power Amp, 8 tupe 6550C for the power stage over four lamps (1 12AX7 and 1 12AU7). He always delivers 400 watts because it has a switch that can turn it into 2, 4 and 8 ohms.
At the outputs (output), 2 outputs and 2 outputs banana jack 6.5, which means that multiple configurations are: two speakers at 8 ohms, 2 into 4 ohms speakers, or a speaker into 8 ohms, and finally in a 4 ohm speaker may be connected to him.
Presence of two toroidal transformers (!!!) plus another type coil power on the inside (I am not a connoisseur of food, dsl), which means that its weight is equal to its characteristics: 33 Kg
Two fans at the rear, with two speeds (low and high). Pretty quiet in low and more than enough.
Height: 4U
Weight: Approximately 33 Kg
Chassis indestructible, and beautiful, in true vintage style.
Specifications:
Power Output: 400 watts RMS. Into 2, 4, or 8 ohms.
Tube Compliment: Eight 6550 power tubes, one 12AX7, one 12U7
Power Consumption: 1.8A @ ​​120 VAC zero signal condition.
Power Requirement: 100, 120, 220, 230 VAC
Transformers: Custom designed toroidal output transform for ultra-wide bandwidth. Est aussi toroidal power transform.
Cooling: Two ultra-low noise fans Regulate the operating temperature of the amp.
Inputs: One 1 / 4 "unbalanced input and one input for patching a preamp thru signal thru to year Additional power amp.
Input Impedance: 470k Ohms.
Output Impedance Selector: A three position switch Provides switching for two, oven, and eight ohms.
Outputs: Two connectors we speak and Two 1 / 4 "outputs
Chassis: High quality aluminum building Provides sturdiness Without excessive weight. Access to Provided tubes IS-through top of unit for convenience and IS isolated from Any dangerous voltages.
Warranty: Ten year limited warranty.
Weight: 4 rack spaces, 57 lbs.
I put 10 despite the weight, because of the sound it provides.

UTILIZATION

Very simple configuration, you plug a preamp behind a branch there or baffles, and turning the volume knob.
the manual is sufficient.
The sound is absolutely huge. It feels good work lamps, to date I have heard nothing of the sort, except when my bass was recorded live to disk, and two Joemeek compressor and equalizer Tubetech Langevin.

SOUNDS

It is suitable for all styles of music, because it provides even at high volume, distortion.
I use a Bass Laurent kah 003-05 (see on this site, L. kah bass), and a preamp TECH 21 PSA 1.1
With the preamp, you can get any type of sound, the power amp appporte its "light color", but remains quite faithful to its led by the preamp.

OVERALL OPINION

I use it for the past four months. Its characteristic is to make this "light tone" in any type of pre-amp (I also tried with EBS EBS-1 and a classic). Each time, it is clear that the most power amp leads.
I tried two other power amp before buying it, my choice being established in preamp. There is nothing like the power amp it is the EBS EPX-800 and Ampeg.
This product is truly extraordinary, both in terms of its weight as its sound!
I do it again this choice without a problem, because the sound with this machine becomes a real product régal.Un this level can only have around 10.