Geloso G 227 A

Mono tube amplifier

FRONT VIEW

Micro 1 and micro 2 inputs (3 pin connectors) – Volume micro 1 – Volume micro 2 – Volume phono – Bass control – Treble control. Power switch.

Lower level : phono 1 input – phono selector switch – phono 2 input – pilot lamp.

BACK VIEW

Anode voltage in/out switch – fusing (2A) – main voltage selectors- AC outlet – speaker impedance table –

speaker connectors (ability to wire up 16 different impedances from 1.25 to 500 Ohms!!) – balanced output.

SPECIFICATIONS

Power : 30 w (35 max)

Total distortion : 5%

Input sensitivity : micro 4mV (1 mΩ) – phono 200 mV (1 mΩ)

Response : 30 – 15 kHz (± 3 dB)

Hum & Noise : 68 dB below max output

Controreaction : 14 dB

Output impedance : 1.25 to 500 Ohms

Power requirement : 120-140 w

Tubes : (2) 12AX7 – (1) 12AT7 – (2) 6CA7

Rectifiers : B300/C200 – B50/C200

Dimensions : 39 x 22 x 21 cms

Weight : 12 Kgs

Geloso Company was founded in 1931 as S. A. John Geloso in Milano, Italy.

The Company manufactured radio receiving and broadcasting equipment

and became the leading Italian manufacturer in the field.

After WWII they moved into the field of consumer electronics and into the manufacture of electronic components.

In the late 50's Geloso tape recorders and ham radio equipments was well known in the USA and UK.

Unfortunately the Company went bankrupt in 1973 and was split into 9 sub companies that were sold separately,

the audio division became PASO Sound.

LINK

Are available on request the schematics