Roma 510AC Signature
80W Integrated Stereo Tube Amplifier
It has taken few years of research and development for Synthesis to bring to market the new ROMA510AC Signature. The Signature version has on board the XLR input and MC/MM phono stage.
We introduced the toroidal transformers in amplifiers, which led to improved performance.To back this up the design has an over size shielded power transformer for reduce the interference. The MM and MC inputs stage use a low noise OPA with a separate regulated power supply with extensive filtering for reducing the interference and noise. Using an OPA as buffer on the output stage, gives this unit a very low output impedance without losing signal.
At first glance, this stunning amp simply takes your breath away! This high performance amplifiers brings out the best of other components in the system. Created by those obsessed with great sound and for those who love great music. The result is 80 watts of pure pentode output per channel built around a double triode 12AX7 on input and a 12BH7 tube as phase splitter and a pair of KT88 power tubes in push-pull configuration for a detailed, delicate and dynamic sound.
- DC Powered tube heater
All tubes, except KT88, have DC stabilised heater circuits to reduce hum noise to a near in-audible minimum.
- Output transformer
The Output transformer uses a Hi-Grade lron-Silicon for superb frequency reproduction & width. With this newly designed custom output transformer we are able to achieving a highly delicate & precise sound reproduction faithful to the original recording.
- Power transformer
Over size shielded power transformer for reduce the interference.
- Mechanical chassis construction
The power supply & output transformers are held by an extremely rigid structure that keeps the unit free from unwanted vibrations which further helps reduce unwanted noise to the tubes.
- Remote control
It has a soft button design, perfectly matching the aesthetics for the "ROMA" series. It controls volume, mute and sources selection.
Four aluminium feet with an insert of strong rubber. These rubber feet has been chosen to minimise vibrations of the amplifier in isolation from its surroundings.
- Binding posts
Gold plated professional binding posts for a continued oxidisation free connection further improve sound refinement.
Gold plated ceramic sockets for a continued oxidisation free connection further improve sound refinement.
Components for the Roma 510AC Signature have been selected with great care throughout. Only the best available components are considered & all must undergo an exhaustive analysis of their sonic influence prior to final selection.
- Selected tubes
All tubes used are selected after 2 stage warm up. A fully computer monitored machine controls the process & at the end of this, selects the perfect tubes which are then matched for a perfect balance.
Power stage (1 ch.)
2 X KT88
Input stage (1 ch.)
1 X 12AX7/ECC83
Driver stage (1 ch.)
1 X 12BH7
(1 ch., THD < 1%)
80W RMS @ 6Ohm
from 20Hz to 20KHz ± 0.5dB
Distortion (MAX Power)
1% @ 1KHz
>80 dB (MM) “A” weighted
>70 dB (MC) “A” weighted
Cartridge Load (Selectable from rear panel)
MM type: 47KOhm - 47pF
MC type: 100/150/300/47KOhm
4 line inputs (n. 3 unbalanced RCA- n. 1 balanced XLR)
1 phono stage MC/MM
Low noise OPA (MC-MM)
ACCURACY FREQUENCY RESPONSE (RIAA)
20Hz - 20KHz +- 1dB
Pre out (variable level)
Manual adjustment, independent for each power tube
117, 230, 245 Vac, 50/60 Hz, (see rear label)
See rear label
Anodized black aluminium
Volume, mute, input selection, st-by
2 x CR2032