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Technical data
Click on the picture to see a preview of the pcb.
The pcb is tested with LT1115, LT1028, OPA627 and OPA134. Virtually any opamp fits if they have proper characteristics. If you are unsure, drop me a note and I can give my point of view.
| Frequency response: | 0 Hz - 2,5 MHz, -3 dB, LT1115 0 Hz - 1,0 MHz, -3 dB, OPA627 0 Hz - 1,0 MHz, -3 dB, OPA134 |
| Frequency response with input filter | 1,5 Hz - 338 kHz, -3 dB |
| Power bandwidth at 10 Vrms, 50 ohms: | 0 Hz - 190 kHz, -3 dB, LT1115 0 Hz - 700 kHz, -3 dB, OPA627 0 Hz - 250 kHz, -3 dB, OPA134 |
| Equivalent input noise: | 100 nV, LT1115 600 nV, OPA627 1,2 µV, OPA134 |
| Signal to noise ratio: | 137 dB, LT1115 122 dB, OPA627 116 dB, OPA134 |
| Dynamic headroom: | 157 dB, LT1115 142 dB, OPA627 136 dB, OPA134 |
| Distortion: | < 0,0002 %, LT1115 < 0,00003%, OPA627 < 0,00008%, OPA134 |
| Slew rate: | 15 V/µs, LT1115 55 V/µs, OPA627 20 V/µs, OPA134 |
| Step response: | Perfect with a minor overshoot, LT1115 Perfect without overshoot, OPA627 Perfect without overshoot, OPA134 |
| Gain: | 11 (21 dB) |
| Input impedance: | 47 kohms |
| Output impedance: | 3 milliohms |
| Damping factor: | 16000 with 50 ohms load |
| Output current: | 1 A peak |
| Supply voltage: | +- 18-33 V DC, 2 x 12-24 V AC |
| Current consumption: | 100-200 mA idle, max 1,4 A, with headphones connected not more than the idle current. |
| Dimensions: | 157,5 (6,2") x 142,2 (5,6") mm |