Mono Bloc Power Amp 70 wpc ultralinear / 40 wpc triode EL34 output stage dual-feedback topology
70 watts ultralinear, 40 watts triode with enough juice to drive most any speaker with ease and grace, and that famous EL-34 warmth people crave. The DiaLogue Six monoblocks begin with the same basic topology as the top-rated DiaLogue One integrated.
But the monoblocks reach a new level of performance using a unique dual-feedback topology: Cross-coupled current feedback for superior impulse behavior and gain stability. Next a slight amount of negative feedback is used to achieve exact gain setting, low distortion, and low output impedance. This effectively cancels the negative byproducts associated with both feedback circuits. The end result utilizes all the benefits of feed-back, without all the drawbacks.
Finally, the monoblocks integrate newly-designed, wide-band, low-loss, output transformers, built to handle even the most difficult speaker loads. A two Ohm output tap is added for additional flexibility.
Like all PrimaLuna amplifiers, it boasts:
- Soft-start circuit Extends component and tube life by powering up gently every time you turn the amp on.
- Tube plate fuse Protects the amplifier output stage.
- Adaptive AutoBias. Exclusive to PrimaLuna, this circuit monitors and adjusts bias automatically. Improved performance and better sound, with distortion reduced by 40 to 50 percent over conventional designs. Like to experiment? Plug in virtually any power tube. Adaptive AutoBias will automatically adjust itself! In addition to EL-34s, you can use 6550, KT88, KT90, 6L6GC, KT66, 7581, EL37, and any of their equivalents.
- Premium parts . Fully vented chassis, chassis-mounted ceramic tube sockets, Alps potentiometer, Nichicon and Realcap capacitors. WBT style speaker terminals. Gold plated input jacks.
- Hand made with the finest point to point wiring, with workmanship equal to or better than any product you can buy at any price, period.
- Chassis made of finely finished heavy gauge steel, and five step automotive quality finish. Each coat hand rubbed and polished. Removable tube cage included no charge.
- Toroidal power transformer for low hum, and a front end that is dead quiet.
- Conservative design parameters: Though PrimaLuna amplifiers are powerful, tubes run well below their maxim ratings. Click here to see why.
Next we take the DiaLogue Six to new heights with:
- Triode/Ultralinear switching. Allows you to switch how the power tubes operate on the fly, via a slim aluminum remote, allowing you to stay in your nice comfy seat while switching between the two modes.
- Improved output transformers designed for wide-bandwidth and high efficiency. Proprietary Custom low hum, wide bandwidth dual output transformers allow the monoblocks to drive most any spaker with ease.These heavy-duty transformers elicit incredible detail from top to bottom, lower the output impedance, and provide the amp with greater control over speakers with difficult loads.
Built to Western standards with PrimaLuna’s standard-setting build quality and unparalleled reliability.
Output: 70 watts x 2 ultra-linear, 40 watts x 2 triode
Freq. Response: 10Hz-100kHz +/- 3dB
THD: Less than 0.25% at 1 watt / 2% at full power
S/N Ratio: 83 dB
Input Sensitivity: 1.1V
Power Consumption (per amp): 232 watts
Dimensions (per amp): 15.2 ” x 8.3 ” x 16″ (WxHxD)
Weight (per amp): 63.8 lbs
Inputs: 1 each RCA
Outputs: 2, 4, and 8 Ohm speaker taps
Tube Compliment (per amp): 2 – 12AX7, 2 – 12AU7, 4 – EL34