T+A PA 3100 HV V 1.0 Integrated amplifier with VU-Meter

PA 3100 HV integrated amplifier

The PA 3100 HV is a further development of the PA 3000 HV and is identical in most components. The immediately visible difference are two VU meters in the front, which display the power output per channel logarithmically in watts at 4 ohms. Furthermore, a new concept for the analog power supply and the power supply was developed, similar to the A 3000 HV, which makes it possible to connect the PS 3000 HV power supply and further increase the stability and performance of the entire power supply. By reworking the preamplifier section, the sound could be improved again.

As in the P 3000 HV, the circuit topology of the integrated amplifier is based on a cascode differential amplifier with hand-selected audio J-FET transistors and completely discrete stages without operational amplifiers. Due to this circuit concept and the quality of the components, practically no over-all feedback is necessary. With its high operating voltage, HV technology enables not only high linearity but also an extremely high dynamic range. Signals up to 60 Vpp can be processed without distortion.
In the HV series, control and switching functions in the signal area are carried out by gas-tight encapsulated gold contact relays, which have no contact problems due to corrosion, dust, etc. and no aging, even after many years of operation. Bi-stable relays are used in the preamplifier, in which no permanent coil current flows and therefore no inductive impairment of the audio signals can occur. By integrating the relays directly into the circuit, the signal paths are optimally short and there is no need for cable routes such as with conventional volume potentiometers. The volume control is also designed with discrete precision resistors and gold contact relays, so there is absolutely precise channel synchronization and no noise or distortion.
The entire control electronics are deeply embedded and shielded in the 40 mm thick front panel, milled from solid, on the front of which is the bright and dimmable glass display (VFD) with wear-free sensor buttons.
The rotary knobs for source selection and volume control are needle-bearing precision incremental encoders with a unique switching feel.

Technical data

• Frequency response + 0 / - 3 dB 0.5 Hz -300 kHz
• External / noise voltage ratio 105 / 110 dB
• THD < 0.001%
• Intermodulation < 0.001%
• Channel separation > 90 dB
• Input sensitivity nominal high level (RCA) 7 x 250 mVeff ... 6 Veff / 20 kOhm
• Input sensitivity nominal Balanced (XLR) 4 x 500 mVeff ... 12 Vrms / 5 kOhm
  

Outputs

• headphones 50 Ohm
• 1 x recorder 250 mVeff / 100 Ohm
• PRE out Cinch nom 1 Veff, max 9.5 Veff / 50 Ohm
• PRE out XLR nom 1.45 Veff, max 19.6 Veff / 50 Ohm
  

nominal

• power per channel at 8 ohms 300 watts
• nominal power per channel at 4 ohms 500 watts
• pulse power at 8 ohms 380 watts
• pulse power at 4 ohms 700 watts
• power bandwidth 1 Hz - 150 kHz
• frequency response + 0 / - 3 dB 0.5 Hz - 180 kHz
• slew rate 60 V/µs
• Damping factor > 65
• Signal-to-noise ratio > 115 dB
• Total harmonic distortion < 0.03%
• Screening 120,000 µF
  

Connection/Accessories/Dimensions

• Mains connection Mains connection. 110 V/60 Hz or 220/240 V/50 Hz
• standby mode < 0.5 W
• remote control F 3001
• additional equipment: trigger input +5 ... 20 V for remote switching, input 4 configurable as front channel for surround decoder, connection for additional power supply PS 3000 HV , LAN connection for home automation systems
• Dimensions (H x W x D) 17 x 46 x 46 cm
• Weight 38 kg
• Housing versions: silver lacquer 47 or titanium 64, heat sink black 42
  

Technical changes reserved!