Is the BC204 a BC206 in a smaller package?
Well, not quite but it's awfully close as far as music reproduction
goes. If your system doesn't need the extra wattage and
you'd like an amplifier that you can pick up without calling the
neighbours for help then the BC204 might be the one.
The details:
- output..150watts into 8 ohms and 250 watts into 4 ohms per
channel.
- True balanced from input to output with both positive and negative
being "hot" with signal.
- DC coupled output stage.
- Blue Circle "Blue Puck Cap" used in power supply
filtering, both in output stage and B+ supply.
- local "on board" filtering capacitors located less
than an inch away from the actual output devices for better transient
response.
- all control circuits are done in the analog domain. Therefore,
no digital clock to contaminate the analog signal integrity. It’s
an analog amp after all.
- heavy gauge power supply ground return path for both tube and
output stages with the exact same reference for both tube and
output stages, to yield the best matching performance.
- 20Amp Neutrik "Power Con" power connector for optimum
connectivity of ac power.
- BC61 (14 AWG ) power cord with Wattgate plug. The standard
length is 4 ft. Longer lengths are available to suit specific
customer requirements.
- All internal ac power is controlled by 30A ac power relays
for shortest ac power run inside the chassis.
- 850VA power transformer supply for output stage only.
- three separate power transformers for output stage, tube input
stage and controls
- over 240,000uF in power supply filtering.
- power HexFred rectifier in both output stage and B+ supply.
- 12Ga steel chassis for mechanical integrity.
- 1" thick MDF base tightly coupled to the bottom of the
chassis for ultra rigid damping control.
- special damping material (latex caulking) to damp the inside
of the cover.
- Various colours of faceplate, base and cover as options.
- Two pairs of binding post per channel for shot gun biwire.
- RCA and XLR inputs.
- Ground lift switch to eliminate ground loops. This switch will
only lift the signal ground, the chassis is connected to earth
ground at all times for safety.
- Dimensions: 18" wide x 9.875" high x 21.5" deep.
- weight: 85lbs.
Measurements, including tube input stage (measured
with matched tubes):
- Residue noise reference to full power output: >-100dB or
<300 uV non weighted
- Residue noise reference to full power output: >-110dB or
< 150uV within audio band
- Tracking error: < +/- 0.09dB
- Frequency response (10W into 8 ohms): 10Hz to 35K +0.00db,
-0.05dB; -0.9db point at >100kHz
- Distortion at 10W into 8 ohms: <0.09%
- voltage gain: 21.5dB
- input sensitivity: 3.19V
- input impedance: 100K (SE); 200K (BAL)
Output stage measurements
- Residue noise reference to full power output: >-100dB or
< 250uV non weighted
- Residue noise reference to full power output: >-112dB or
< 100uV within audio band
- Tracking error: < +/- 0.025dB
- Frequency response (10W into 8 ohms): 10Hz to 50K +0.00db,
- 0.025dB; -0.5db point at >100kHz
- Distortion at 10W into 8 ohms: <0.03%
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