Recently there appeared on eBay the amplifier shown below:

The seller apparently had some familiarity with Hilgen amplifiers. He or she described the amp as a 1965 Hilgen Model B2501 "Basso" Model that had been re-branded as a "Giulietti."  The grille cloth, knobs, cabinet design, handle, and the general layout of the faceplate are certainly consistent with the Hilgen line of amplifiers. According to the seller, the amp had a 15" speaker, which may have led him or her to assume that this was one of Hilgen's bass amplifiers. 

However, the photograph of the faceplate shows that the amp was equipped with both reverb and tremolo, which was never included on any Hilgen bass amplifier.  Hilgen never designated an amp as a "Model S-9" or anything close to that, nor did it make an amplifier that was specifically designed for use by accordionists, as might be a reverb- and tremolo-equipped amplifier with a 15" speaker. The pilot light is one I have seen only on the Model R2024 Challenger, but its faceplate was black.  The "Giulietti" logo on the front uses a construction and script design that was commonly employed by the Sano company in the early to mid-1960's, but was never used by Hilgen. 

The Giulietti company was best known for producing ornate, high-end accordions.  It apparently commissioned accordion amplifiers during the 1950's and 1960's, which amplifiers show design elements highly consistent with their having been made by Sano:

If the seller is correct about the amp having been made in 1965, then the best explanations for its appearance are either that Hilgen jobbed that amplifier directly for Giulietti or that Sano subcontracted its manufacture to Hilgen.  I have seen no other Hilgen-styled amplifiers bearing the Giulietti logo.

It might fairly be objected that, although this website extols the virtues of Hilgen amplifiers, there has thus far been no evidence that they can be put to practical use in the context of a live band.

The photographs below feature no one notable - just me, playing my faithful Gibson SG with my band "Misspent Youth" at a gig in Cumberland, Maine this summer:

I have become accustomed to my bandmates ceaselessly commenting, "Wow, I can't believe I've never even heard of Hilgen amps."   However, I have received no complaints about how the amps actually perform. 

I generally use the Model R2523D Champion shown in these photographs.  It's a two-channel model of the Champion that allows me to bridge the "Bright" input on Channel 1 to the "Inst" input on Channel 2 and then plug into the "Accordion" input on Channel 2.  As I have mentioned elsewhere on this site, each of the inputs is distinctively voiced, and the "Accordion" input on this and most Hilgen amplifiers delivers, in my opinion, the widest tonal range and most prominent overtones of the four inputs.  (I have also used a single-channel Champion and a Model B2503 Basso Grande with highly satisfactory results.)  These relatively low-wattage amps start clipping pretty quickly when cranked, so that without effects pedals and at tolerable volume levels, they produce a smooth, warm, dark overdrive.  They respond unusually to pedals; whatever effects are being used seem to "bloom" from the amp after some compression rather than being glaring or processed-sounding.  At one gig, where the conditions were just right, I used no distortion/overdrive pedals at all for lead solos and relied entirely on a clean boost pedal to push the amp into a wonderfully sustaining overdrive sound.  At times the sound can resemble that of Neil Young's Fender Deluxe amps in his live recordings with Crazy Horse.  If so desired, they feedback readily and musically.

I have on several occasions communicated with persons who complained that their Hilgens, "though fine for studio work, they just don't 'cut through' when I play live with my band."  I am skeptical of such complaints.  Unless your band requires super-clean tone at ear-splitting volumes, the Basso Grande, Champion, and SwingAway models are powerful enough to keep up with any modern 50 watt amp and sound great while doing so.  (Indeed, I have frequently drawn objections from my bandmates when I have underestimated my volume levels.)

This is not to say that the lower-wattage Hilgens would not also work well in a band setting; I simply have not tried using them for that purpose.