Thoress F2a11 Single-Ended Triode Integrated Amplifier

Pictures represent the actual item for sale
Ownership History: Single owner

Age: 1.5 years, sparingly used
Cosmetic Condition: Like new
Functional Condition: Perfect
Packing: Original factory packing

Like a rare cask Armagnac. Organic midrange, shimmering treble, and bass that’s agile yet understated, leaving a finish that lingers long after the last note.

The F2a11 Integrated Amplifier utilizes...

the famous F2a11 vacuum tube in single-ended triode
operation mode for an output power of 2x6 watts into
a 4, 8 or 16 ohm load. The F2a11 tube is a power tube
of matchless built quality, exclusively manufactured
by SIEMENS (& HALSKE) in the 1950s and early 1960s
which has been specifically designed for the most
demanding industrial applications. It belongs to the
famous so called POSTRÖHREN family of German tubes
and is widely known for its usage in the iconic SIEMENS
KLANGFILM cinema amplifiers.

When operated in triode mode the F2a11 offers excellent
sonics on par with the finest classic filamentary triodes
such as 300B, 2A3, AD1 or PX25.

Feature Overview:

All-Tube Integrated Amplifier with 2x6 watts of output power utilizing the famous Siemens F2a11 Power Pentode in single-ended triode mode and a highly linear 12SN7GT double-triode in the driver stages.

• Minimalist zero-feedback schematic.
• 3 line level inputs (2x3 RCA jacks) selectable via rotary dial on the rear panel.
• High-grade continuously variable potentiometers for separate (manual) volume
control of the channels.
• Ultimate C-Core output transformers (OPT) produced in-house. Precise 4, 8, and
16 ohm loudspeaker load matching via jumpers soldered to the secondary
terminals of the OPT.
• High-grade electrolytic capacitors (made in Germany) in the power supply.
• Ultra low noise mains transformer made in-house for 230Vac (115Vac via jumper
setting), 100Vac (Japan), 220Vac (South-Korea, China, Thailand, Indonesia) or
245Vac (Australia).
• Full hand construction, point-to-point wiring throughout.
• Nonmagnetic aluminum casework, anodized printing on front and rear panel,
powder-coated chassis, and lids.
• Dimensions: 150x595xH330 mm,
330=20 (case feet) +210+100 (power tube over case),
595=575+20 (binding posts).
• Weight 18 Kg.
• Dimensions of the shipping crate 400x950xH460 mm.