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  1. questionWhy does the Continuum 250 employ the ICEpower 500 ASP power conversion module?
    ICEpower 500 ASP modules are fundamental engineering building blocks found inside a number of class D power amplifiers of all levels of sophistication and complexity. They yield extremely fast, responsive, extended, powerful, and highly controlled amplification, with very little heat dissipation ...
  2. questionIs the Continuum 250 compatible with low efficiency speakers?
    The Continuum 250 integrated amplifier supports a minimum speaker impedance load of 3 Ohms. Continuum 250 also features a damping factor of 1000. These features make the amplifier compatible with many low efficiency speakers, like moderately sized electrostatics and biplanars.
  3. questionWhat is the sonic signature of the Continuum 250 integrated amplifier?
    The Continuum 250 is an integrated power amplifier that inherits the hallmark sonic character of Jeff Rowland’s great classic products—great imaging and staging, and a grain free musicality. It is capable of great presence, excellent frequency extension, the ability to recover fine ...
  4. questionHow can the Continuum 250 integrated power amplifier exceed the performance of more expensive integrated amplifiers?
    The secret of the exceptional performance of the Continuum 250 integrated amplifier is in its elegant architecture. Its front end incorporates advanced technologies with great sonic potential for music amplification, such as an input isolation transformer, and a highly regulated very high speed ...
  5. questionWhat are the salient technical features of the Continuum 250 integrated amplifier?
    As typical for JRDG products, the entire chassis of the Continuum 250 is milled from a solid, massive block of 6061 aircraft-grade aluminum to provide a vibration-free and EMI resistant enclosure for sensitive audio circuitry. The chassis is sealed to prevent dust from penetrating the interio ...
  6. questionWhy is the preamplifier stage in the Continuum 250 integrated amplifier designed around the tiny Burr Brown OPA1632 module instead of utilizing bulky discrete components?
    The extraordinary performance of the Continuum 250 integrated amplifier is made possible in part by the exceedingly high electrical and electronic performance of the TI Burr Brown OPA1632 fully differential I/O audio amplifier modules in its preamplifier stage. These are the same 180 MHz I/O aud ...
  7. questionIs the Continuum 250 integrated amplifier equivalent to the Continuum 500 except for sporting less powerful ICEpower power conversion modules?
    The Continuum 250 incorporates twin 250W per channel ICEpower 500 ASP power conversion modules, instead of the 500W per channel ICEpower 1000 ASP used in the Continuum 500. As the Continuum 250 does not include an active power factor correction (PFC) circuit, but never-the-less uses switch mode ...
  8. questionIs the Continuum 250 integrated amplifier equivalent to the combination of the Capri preamplifier with a pair of 201 monoblock amplifiers?
    The Continuum 250 is more than the combination of a pair of Model 201 monoblock amplifiers with a Capri preamplifier. Inside its elegant chassis, Continuum 250 also features twin banks of bulk output capacitors which boost its authority and dynamics to levels unheard in integrated amplifiers in ...
  9. questionIs the Continuum 250 a green product, and why is it important?
    Jeff Rowland is committed to help manage responsibly the finite energy resources of our planet. This is one of the many reasons why he has embraced the green technologies of switch mode power supplies and class D ICEpower in the Continuum 250 integrated power amplifier. The Continuum 250 enjoys ...
  10. questionWhat is the power conversion efficiency of Continuum 250?
    The advanced power management design of the Continuum 250 class D amplifier enables it it to draw a modest 25 Watts of energy when idling. The Continuum 250 achieves a staggering power conversion efficiency of 98%. This means that only 2% of its energy balance is converted into heat, while the r ...
  11. questionWhy does the PC-1 PFC rectifier become compatible with the Continuum 250 integrated amplifier only after converting the Continuum 250 to 240V operation?
    The Continuum 250 integrated amplifier does not incorporate a PFC circuit. As it does employ a switch mode power supply, after conversion to 240VAC operation, the Continuum 250 becomes compatible with the external PC-1 PFC-based rectifier and conditioner. Conversely, connecting a PC-1 to a Conti ...
  12. questionWhy are both the positive and negative leads on the speaker connectors carrying current?
    The symmetrically balanced design of the Continuum 250 integrated amplifier extends to its output stages to yield superior speaker control at any load. The ICEpower 500 ASP modules at the core of the Continuum 250 are inherently balanced, and drive the output stages with a symmetrically balanced ...
  13. questionIs Continuum 250 compatible with high efficiency speakers?
    The Continuum 250 integrated amplifier supports a maximum speaker impedance load of 16 Ohms, which makes it compatible with most high efficiency speakers.
  14. questionCan the Continuum 250 drive any speaker load?
    The Continuum 250 integrated amplifier supports speaker impedance loads between 3 and 16 Ohms. This makes Continuum 250 compatible with a wide range of speakers on the market, from moderately sized electrostatic and biplanars, to high efficiency speakers. However, the Continuum 250 is not comp ...
  15. questionCan the Continuum 250 drive bi-wired speakers?
    The Continuum 250 integrated amplifier has 1 single pair of binding posts per channel. On bi-wire capable loudspeakers, remove the jumpers connecting the 2 sets of binding posts together on the loudspeakers. Connect 2 speaker wires to each pair of Continuum 250 binding posts. Connect one pair of ...
  16. questionCan the Continuum 250 be used as a preamplifier only, and output a line signal to an external power amplifier?
    Yes, the Continuum 250 integrated amplifier features both balanced and unbalanced line level outputs. These can be connected to drive an external power amplifier.
  17. questionWhere is the serial number of the Continuum 250 integrated amplifier located?
    The serial number of the Continuum 250 integrated amplifier is located on the rear panel of the chassis. It starts with the letters “CU”. The serial number must be included with any correspondence with the factory.
  18. questionDoes the Continuum 250 integrated amplifier support an external 12V power trigger?
    Yes, the Continuum 250 supports a 12V remote power trigger. A 1/8” (3.5 mm) mini-plug connector is provided on the rear panel of the Continuum 250 for remotely switching the amplifier between Operational and Standby modes. When connected to another component with the proper circuitry, the ...
  19. questionDoes the Continuum 250 support theater bypass?
    Yes, the Continuum 250 integrated amplifier supports theater bypass operation through a pair of single ended RCA inputs with unity gain.
  20. questionDoes the Continuum 250 support single ended as well as balanced inputs and outputs?
    Yes, the Continuum 250 integrated amplifier features a full complement of balanced and single ended inputs and outputs, including: Inputs: 2 x balanced XLR. 2 x single ended RCA. 1 x single ended unity gain (theater) bypass. Outputs: 1 x XLR balanced line level. 1 x single ended RCA line level.
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