Purifi ‘Eigentakt’ Amplifier Technology
Purifi is a Danish technology company that has brought together several of the industry’s leading engineers to apply advanced mathematical modelling to solve the last remaining limitations of audio amplifiers. While there are many good sounding amplifiers on the market today, Purifi has taken a fresh look at every aspect of amplifier performance and found many seemingly small non-linearities that can make a dramatic difference in the overall sound. This return to first principles has resulted in a stunningly simple approach to some remarkably complex problems. With features and technology unmatched by other amplifiers in its class, the C 298 amplifier is an easy upgrade for any system and a surprising partner for the most sophisticated and advanced loudspeakers on the market.
Features
- 185W x 2 Rated Output Power into 8 Ohms
- 340W x 2 Rated Output Power into 4 Ohms
- Stereo Dynamic Power 260/490/570W @ 8/4/2 Ohms
- 620W x 1 Rated Output into 8 Ohms Bridge Mode
- Mono Dynamic Power 1000/1100W @ 8/4 Ohms
- Purifi Eigentakt™ Amplifier Technology
- Balanced Line Inputs
- Single-Ended Line Inputs
- Input Level Control
- Line Output for Daisy Chaining
- 12V Trigger In/Out
- Auto Turn-on with Selectable Threshold
- IR In/Out
- Ground Lug
- Detachable AC Power Cord
ANALOG AUDIO INPUT/LINE OUT
- THD (20 Hz – 20 kHz)
- <0.0005 % at 2V out
- Signal-to-Noise Ratio
- >120 dB (IHF; 20 Hz – 20 kHz, ref. 2V out)
- Channel separation
- >110 dB (1 kHz)
>100 dB (10 kHz) - Input impedance (R and C)
- Single-ended: 56 kohms + 280 pF
Balanced: 56 kohms +280 pF - Maximum input signal
- >7.0 Vrms (ref. 0.1 % THD)
- Output impedance
- 390 ohms
- Frequency response
- ±0.1 dB (20 Hz – 20 kHz)
- Maximum voltage output -IHF load
- ≥>7.0 V (ref. 0.1 % THD)
ANALOG AUDIO INPUT/SPEAKER OUT
- Rated output power into 8 Ohms and 4 ohms (Stereo mode, ref. 20 Hz-20 kHz at
rated THD, both channels driven)
- 185 W at 8 ohms
340 W at 4 ohms - Rated output power into 8 Ohms
(Bridge mode, ref. 20 Hz-20 kHz
at rated THD, both channels driven) - 620 W at 8 ohms
- THD (20 Hz – 20 kHz)
- <0.005 % (1 W to 185 W, 8 ohms and 4 ohms)
- Signal-to-Noise Ratio
- >98 dB (A-weighted, 500 mV input, ref. 1 W out in 8 ohms)
>120 dB (A-weighted, ref. 185 W out in 8 ohms) - Clipping power (Stereo mode, at 1 kHz 0.1 % THD)
- >200 W
- Clipping power (Bridge mode, at 1 kHz 0.1 % THD)
- >690 W
- IHF dynamic power (Stereo mode, at 1 kHz 1 % THD)
- 8 ohms: 260 W
4 ohms: 490 W
2 ohms: 570 W - IHF dynamic power (Bridge mode, at 1 kHz 1 % THD)
- 8 ohms: 1000 W
4 ohms: 1100 W - Peak output current
- >25 A (in 1 ohm, 1 ms)
- Damping factor
- >800 (ref. 8 ohms 20 Hz – 6.5 kHz)
- Frequency response
- ±0.2 dB (20 Hz – 20 kHz)
-3 dB at 60 kHz - Channel separation
- >100 dB (1 kHz)
>80 dB (10 kHz) - Stereo Mode input sensitivity (for 185 W in 8 ohms)
- Fixed Gain mode: 1.43 V
- Stereo Mode Gain
- Fixed Gain mode: 28.6 dB
- Line In – Balanced and Single-ended
- Variable Gain mode: 8.5 dB – 28.5 dB
- Bridge Mode Sensitivity
- Fixed Gain mode: 3.78 V for 620 W in 8 ohms
- Line In – Balanced and Single-ended
- Variable Gain mode at maximum: 1.41 V for 620 W in 8 ohms
- Bridge Mode Gain
- Fixed Gain mode: 25.4 dB
- Line In – Balanced and Single-ended
- Variable Gain mode: 14.5 dB – 34.5 dB
- Standby power
- <0.5 W
DIMENSION AND WEIGHT
- Gross dimensions (W x H x D)
- 435 x 120 x 390 mm (17 1/8 x 4 3/4 x 15 3/8 inches)
- Net weight
- 11.2 kg (24.7 lbs)
- Shipping weight
- 13.6 kg (30 lbs)