Amplifiers

  • Line Magnetic LM-217IA

    Line Magnetic LM-217IA

    LM-217IA

    Single-End Tube Amplifier

    The Line Magnetic 217IA integrated amplifier operates in Class A with tubes 300B mounted in “Single-ended” and delivers a power of 2x8W. It has 3 unbalanced line inputs, a CD input and groups of 4 and 8Ω outputs. The backlit level meter on the front is used to adjust the polarization of the tubes. The use of high quality components (Realcap capacitors, potentiometer ALPS) wired in the air for the most part is the guarantee of exemplary reliability. Its output transformers are EI type designed especially for it allow to manage a very wide range of speakers. The LM-217IA delivers sound that is dynamic, rich and natural. Voice soft modes and Pure and smooth are suitable for vocals and softer music based of ropes.

    Features:

    1.Hand-made construction with the finest point-to-point wiring.
    2.Specially designed EI transformer for power supply.
    3.Two EI output transformers with wide bandwidth are applied.
    4.Two 12AX7s and 12AU7s are used in the preamp stage.
    5.300B tubes are used for A single ended class a power amplifier.
    6.Provide the triode and superlinear selection function. Triode, voice soft, pure and smooth, suitable for appreciation vocals, string and other types of music;
    7.Triode and Ultralinear selection.
    8.SoftStart and time-delay circuit. (30 seconds)
    9.ALPS volume control and Realcap capacitors are applied.
    10.Remote control for all functions.
    11.User bias control is accessible on top of the amplifiers panel with true ampere meter.
    12.Convenient installation drawing plug-in valve cap

    Specifications:
    Power output:8W+8W(RMS Triode operation)
    Frequency response:10Hz~50kHz(-1.5dB)
    THD:1%(1kHz)
    S/N Ratio:87dB
    Input Sensitivity:180mV
    Input Impedance:100kΩ
    Output Impedance:4Ω ,8Ω
    Tube Complement:12AX7 x2、12AU7 x2、300B x2、5U4G x1、5AR4 x1
    Power supply: AC 220V 50/60Hz ±10%
    Power Consumption:90W
    Working Condition: Temperature: 0℃~40℃ Moisture: 20%~80%
    Storage Condition: Temperature: -20℃~70℃ Moisture: 20%~90%

    Dimension: W 376 x H 192 x D 345mm
    Net weight: 22kg

  • Line Magnetic LM-219IA

    Line Magnetic LM-219IA

    300B 845 Vacuum Tube Single-Ended
    Class A Power Amplifier

    An upgraded version of line magnetic LM-219. Tubes have been upgraded, upgraded circuit optimization, & upgraded transformer optimization.

    Product features:
    Pure Class A , Single Ended design . Twenty four watts per channel .
    All tube integrated with 12AX7 input tubes , 310A and 300B double stage driver tubes and 845 output tubes.
    4 pairs of input connectors , Speaker terminals for 4 , 8 , 16 Ohm are provided.
    Two user bias controls and bias meters are located on the front panel , allowing you to monitor and adjust bias with ease.
    One output meter with two needles is located on the middle of the frontplate , to allow you to monitor the power output of each channel.
    Two pieces of specially designed EI transformers for the power supply and two EI transformers with wide bandwidth are used in the design.
    A Japanese ALPS audio grade volume potentiometer is used.
    Standard with remote control.
    Hand made construction with the finest point-to-point wiring.
    Soft start and time delay circuit ( 30 secondes ).

    Specification:
    -Power output:24W+24W(Single-ended Class A)
    -Frequency response:15Hz~35kHz(-1.5dB)
    -THD:1%(1kHz)
    -S/N Ratio:87dB
    -Input Sensitivity:230mV(Integrated) 1000mV (Pre-IN)
    -Input Impedance:100kΩ
    -Output Impedance:4Ω、8Ω、16Ω
    -Power Requirements: ~220V±5%(50Hz)
    -Dimension (WxDxH): ( 430 x 430 x 400 )mm
    -Tube Complement:12AX7 x2、310A x2、300B x2、845 x2
    -Net Weight:55kg
    -Power Consumption:400W
    -Working conditions: temperature: 0 ℃ to 40 ℃ Moisture: 20% ~ 80%
    -Storage conditions: temperature: – 20 ℃ ~ 70 ℃ Moisture: 20% ~ 90%

  • Line Magnetic LM-34IA

    Line Magnetic LM-34IA

    Integrated Tube Amplifier
    Push Pull EL34 – CLASS AB – 2X40W

     

    Forty watts per channel, Class AB Integrated Stereo Amplifier with EL34 output power tubes, 12AX7 and 12AU7 input tubes.

    Standard with EL34 output tubes. Want to enjoy some other types of power tubes? That is why we have tube selector here.

    Different from other inputs Pre-In offers you a possibility to connect to some other pre-amplifier so that you can the LM-34IA as a power amplifier.

    Specially designed EI transformers for power supply and two EI output transformers with wide bandwidth are applied. Hand made construction with the finest point-to-point wiring and special audiophiles components has been carefully selected by our designers.

    User bias control has been used for bias adjustment and one meter has been added to the top plate to allow you to monitor bias with ease.

    Highlights
    – Class AB amplifier
    – Point-to-point wiring
    – High quality components

    TUBES
    Input stage: 1x 12AX7 – 2x 12AU7
    Power stage: 4x EL34

    Bias control is accessible on top of the amplifier panel with true ampere meter.
    SoftStart and time-delay circuit. (30 seconds)
    Specially designed EI transformer for power supply
    Two EI output transformers with wide bandwidth are applied
    ALPS volume control and Realcap capacitors are applied.

    Metal and removable tube guard cage
    Infrared Remote control

    Specifications
    Class AB amplifier – 2x40W RMS
    THD: 1% (1kHz)
    Signal/Noise ratio: 88dB (Weighted A)
    Frequency response (-1.5dB): 10 – 50.000 Hz
    Sensitivity: 300 mV
    Input Impedance: 100kΩ
    Load impedance for HP to connect: 4/8Ω

    Connectors
    3x Line inputs RCA (pair)
    1x Pre-in input
    2x Screw terminals compatible with banana plugs

     

    Dimensions: W 377 x H 345 x D 190 mm
    Weight: 20 Kg

  • Line Magnetic LM-503PA

    Line Magnetic LM-503PA

    DUAL Mono-block Audio Power Amplifier

    The LM-503PA mono blocs has been created from an original design of Western Electric. It uses a single ended 845 output stage with Full Music 300B drivers. Pre-amplifier stage use a special Line Magnetic tube, the 310A.

    The rectifier tube is a 5U3C and the power line is filtered by two special chokes. User bias controls for 300B and 845 are used for bias adjustment with a specific vu meter to allow you to monitor bias with ease.

    Features:

    Point to point hand soldering circuit, the whole machine adopts single copper soldering.
    Using high-grade special craft and high quality wide range of EI type single-ended output transformer.
    Use 1 high-power Toroidal power transformer per channel.
    Preamp stage using the company design and development of 310A vacuum tubes, promote use 300B level.
    Power stage using one 845 vacuum tubes do class A single-ended power amplifier.
    Power tube current tuning knob and current display meter.
    The input has sound balance transformer input and RCA input selection.
    High voltage delay when turn on.
    Set up big negative feedback loop and small loop negative feedback, to adapt to the different requirements of listening.
    Convenient installation drawing plug-in valve cage cover.
    Voice is soft, pure and smooth, suitable for appreciation of various types of music.

    Specification:
    Power output: 24W +24W(Single-ended class a working condition)
    THD: 1%(1kHZ)
    Frequency response: 15 hz ~ 35 kHZ (1.5 dB)
    S/N Ratio: 87db
    Input Impedance: 100kΩ
    Output Impedance: 4 Ω, 8 Ω, 16 Ω
    Input Sensitivity: 1000 mV
    Vacuum Tube: (310A x 1, 300B x 1, 845 x 1, 5U3C x 1) * 2
    Power supply: AC 220V (+-5%) (50Hz)
    Power Consumption: 290w
    Working conditions: temperature: 0 ℃ to 40 ℃ Moisture: 20% ~ 80%
    Storage conditions: temperature: – 20 ℃ ~ 70 ℃ Moisture: 20% ~ 90%

    TUBES
    Input stage: 1x 310A
    Rectifier: 1x 5U3C
    Drivers: 1x 300B
    Power stage: 1x 845 “Single-ended” and Class A amplifier

    Bias control is accessible on top of the amplifier panel with true ampere meter.
    Selector NFB min/max
    Analog inputs: 1x XLR et 1 RCA
    Load impedance for HP to connect: 4/8/16ΩS
    SoftStart and time-delay circuit. (30 seconds)
    Two EI output transformers with wide bandwidth are applied

    Metal and removable tube guard cage

    Dimension: W 287 x D 574 x H 279) mm x 2
    Net Weight: 32kg x 2 = 64kg
    Gross Weight: 34kg x 2 = 68kg

  • Line Magnetic LM-513PA

    Line Magnetic LM-513PA

    Dual Mono-Block Power Amplifier Pair

    === DISCONTINUED ===

    The mono amplifier LM-513PA is a Push Pull amplifier with 4x 845 tubes in pure Class A amplification and delivers 1x160W. The use of high-quality components (Multicap, Philips BC filter, Motorola…) hand-made with the finest point-to-point wiring the most part is the guarantee of exemplary reliability.

    Two pieces of Toroid power transformers with high power output are used for better power control and allocation.

    Specification:
    Power output: 160W (MAX)
    THD: 1% (1kHZ)
    Frequency response: 15 hz ~ 35 kHZ (-1.5 dB)
    S/N Ratio: 87 db
    Input Impedance: 100 k Ω (RCA) 600 (Balance)
    Output impedance: 4 Ω, 8 Ω, 16 Ω
    Input Sensitivity: 1000 mV
    Tube:12AX7x1、310Ax1、300B x1、845 x 4
    Power Consumption: 600 w

    Dimensions & Weight
    PRODUCT                              W 447 x H 347 x D 497 mm / 74 Kg
    PACKAGING                             W 610 x H 490 x D 580 mm / 80 Kg
    Net weight: 80kgx2 = 160KG

    Power supply voltage: ~220V±5%(50Hz)
    Working conditions: temperature: 0 ℃ to 40 ℃ Moisture: 20% ~ 80%
    Storage conditions: temperature: – 20 ℃ ~ 70 ℃ Moisture: 20% ~ 90%

  • Line Magnetic Audio Indonesia

    Line Magnetic LM-845 Premium Version

    LM-845 PREMIUM

    VACUUM TUBE INTEGRATED AMPLIFIER

    SINGLE ENDED 845 – 2X30W

     

    The LM-845 Premium is the result of many years of research on the 845 triodes Single-ended design. Thanks to its exceptional design and manufacturing quality, it is fast becoming the absolute reference in the high-end amplifiers world.

    With a power output of 2x30W, it can be used with most of the existing reference speakers.

    The LM-845 Premium is a combination of two units: One is the amplifier unit and the other is an output unit.
    The LM-845 Premium uses Shuguang 300B tubes in drivers, the 310A for amplifier and Shuguang 12AX7 in pre-amplification.

    There are two user bias controls for 300B and 845 have been used for bias adjustment and two meters have been added to the front plate to allow you to monitor bias with ease. Negative feedback switch is on the front plate that you can choose between two levels of NFB to enjoy the different sound outputs.

    The LM-845 Premium uses 8 transformers (power supply, filtering, coupling and output)!

    Highlights
    – Single-ended design
    – Class A amplifier
    – Point-to-point wiring
    – High-quality components

    TUBES
    Input stage: 2x 12AX7
    Drivers: 2x 300B, 2x 310A
    Power stage: 2x 845 « single-ended »

    Hand-made construction with the finest point-to-point wiring
    Bias control is accessible on top of the amplifier panel with true ampere meter.
    soft start and time-delay circuit. (30 seconds)
    Specially designed EI transformer for power supply
    Two Premium versions EI output transformers with wide bandwidth are applied
    ALPS volume control and Realcap capacitors are applied.

    Metal and removable tube guard cage
    Infrared Remote control

    Tubes basics               Common replacements
    12AX7                           12AX7EH, ECC83, E83CC, CV4004, ECC803, 5751
    300B                              300A, 4300B
    845                                845 A/B/C
    310A                              Soviet Union/om12C, WE310A

     

    Specifications
    Class A amplifier – 2x30W RMS
    THD: 1% (1kHz)
    Signal/Noise ratio: 87dB (Pondéré A)
    Frequency Response  (-1.5dB): 10 – 50.000 Hz
    Sensitivity: 220 mV (Built-in Mode)
    Input Impedance: 100kΩ
    Load impedance for HP to connect: 4/8/16Ω

    Connectors
    3x Line inputs RCA (pair)
    1x Pré-in input
    2x Screw terminals compatible with banana plugs

    Dimensions:
    Amplifier unit: W 435 x H 460 x D 456 mm
    Output unit: W 435 x H 160 x D 456 mm

    Total dimensions: W 435 x H 620 x D 456 mm
    Total Weight: 62 Kg

    Finish: Black

  • Line Magnetic LM-845IA

    Line Magnetic LM-845IA

    INTEGRATED TUBE AMPLIFIER
    SINGLE ENDED 845 – 2X22W

    The LM-845IA is a quality upgrade of the old LM-518 amplifier. It delivers twenty-two watts per channel. Single ended design, Pure Class A, Integrated Stereo Amplifier with 845 output power tubes. The rear-illuminated front panel meter is used to adjust the polarization of the tubes.

    The use of high quality components (Realcap capacitors, ALPS potentiometer) wired in the air for the most part is the guarantee of exemplary reliability. Its transformers output are of EI type, specially designed for power supply.

    Its power and current capacity allows it to manage a very wide range of speakers. The use of the legendary triode 845 offers a listening to an unusual musicality.

    Highlights
    – Single ended design
    – Class A amplifier
    – Point-to-point wiring
    – High quality components

    TUBES
    Input stage: 2x 12AX7
    Rectifier: 1x 5AR4
    Drivers: 2x 6P3P
    Power stage: 2x 845 « single-ended » design and pure class A

    Hand-made construction with the finest point-to-point wiring
    Bias control is accessible on top of the amplifier panel with true ampere meter.
    Analog Inputs: 3 line inputs Load impedance: 4/8/16Ω
    SoftStart and time-delay circuit. (30 seconds)
    Specially designed EI transformer for power supply
    Two EI output transformers with wide bandwidth are applied
    ALPS volume control and Realcap capacitors are applied.

    Metal and removable tube guard cage Infrared
    Remote control

     

    Tubes Basics Common Remplacements
    12AX7 12AX7EH, ECC83, E83CC, CV4004, ECC803, 5751
    12AU7 ECC82, 12AU7EH, 5814, 6189, CV4003
    EL34 6CA7

    Specifications
    Class A amplifier – 2x22W RMS
    THD: 1% (1kHz)
    Signal/Noise ratio: 87dB (Weighted A)
    Frequency response (-1.5dB): 10 – 50.000 Hz
    Sensitivity: 220 mV (Built-in Mode)
    Input Impedance: 100kΩ
    Load impedance for HP to connect: 4/8/16Ω

    Connectors
    3x Line inputs RCA (pair)
    1x Pre-in input
    2x Screw terminals compatible with banana plugs

    Included Accessories
    2x Fuses
    1x Remote control
    2x Battery AAA
    1x Detachable power cord
    1x Manual
    1x Warranty Card

    Dimensions: W 365 x H 250 x D 340 mm
    Weight: 35 Kg

  • Line Magnetic LM-88IA

    Line Magnetic LM-88IA

    Integrated Tube Amplifier
    Push Pull KT88 – 2X42W

    Forty-two watts per channel, Class AB Integrated Stereo Amplifier with KT88 (JJ Electronic) output power tubes, 6CL8A (Mullard) and 12BH7 (Electro Harmonix) input tubes.

    LM-88IA Amplifier can operate in two different ways Auto-biased or Fixed bias. You can select the one you prefer. Power output for Auto-bias mode is 45 watts while for fixed bias it is 30 watts per channel.

    Specially designed Toroid transformers made of Z11 Core fort power supply and two Japanese Audio grade EI types of output transformers with wide bandwidth are applied. All transformers and chokes are encapsulated and installed separately on the amplifier to avoid and lower the disturbance between each other.

     

    Highlights
    – Point-to-point wiring
    – Triode/ultra-linear modes
    – High quality components

    TUBES
    Input stage: 2x 6CL8A (Mullard) et 2x 12BH7 (Electro Harmonix)
    Power stage: 4x KT88 (JJ)

    Specifications
    Class A amplifier
    THD: 1% (1kHz)
    Signal/Noise ratio: 87dB (Weighted A)
    Frequency response: 10 à 50.000 Hz (-1.5 db)
    Sensitivity: 180 mV (fixe), 250 mV (auto), 1000 mV (pré-in)
    Input Impedance: 100kΩ
    Load impedance for HP to connect: 4/8/16Ω

    Specially designed EI transformer for power supply
    Two EI output transformers with wide bandwidth are applied
    ALPS volume control and Realcap capacitors are applied.
    Analog inputs: 3 RCA line inputs (pair)
    SoftStart and time-delay circuit. (30 seconds)

    Connectors
    3x Line input RCA (pair)
    1x Pre-In input
    2x Screw terminals compatible with banana plugs

    Dimensions : W 430 x H 220 x D 365 mm
    Weight: 19,6 Kg

  • Line Magnetic LM-mini84iA Headphone Amplifier

    Line Magnetic LM-mini84iA Headphone Amplifier

    LM-mini84iA

    Headphone Amplifier

    The LM-mini84iA is a compact integrated amplifier specifically built to match with headphones. EL84 tubes are used in a single ended design to deliver 3 watts per channel.

    The LM-mini84iA can be inserted into any existing system between a source and amplifier to provide a fantastic sounding headphone signal. For example, it could be used between a DAC and integrated amplifier, passing the signal through to the main amplifier and speakers when not in use.

    This amplifier can also be used to directly power high efficiency speakers, with a selector located on the front panel to choose between speaker or headphone output.

    Some Highlights
    – Compact single ended design
    – Class A amplifier
    – Point-to-point wiring
    – High quality components

    Tubes used in this amplifier
    Input stage: 2x 12AX7
    Power stage: 2x EL84

    Features
    Hand-made construction with the finest point-to-point wiring
    SoftStart and time-delay circuit – 30 seconds
    EI power supply and output transformers with wide bandwidth
    ALPS volume control and Realcap capacitors
    Metal and removable tube guard cage
    Infrared Remote control

    Tubes supplied Common replacements
    12AX7 12AX7EH, ECC83, E83CC, CV4004, ECC803, 5751
    EL84 6P14, 6P14P, 6BQ5, N709

    Specifications
    Class A amplifier – 2x3W RMS
    THD: 1% (1kHz)
    Signal/Noise ratio: 87dB (Weighted A)
    Frequency response (-1.5dB): 10 – 50,000 Hz
    Sensitivity: 210 mV
    Input Impedance: 100kΩ
    Load impedance: 4/8Ω

    Connectors
    1x Line input RCA (pair)
    1x Headphone output Jack 3.5mm
    2x Screw terminals compatible with banana plugs

    Dimensions: W 175 x H 123 x D 190 mm
    Weight: 4.5 Kg
    Finish: Black

  • Playback Design Dream Amplifier

    Playback Design Dream Amplifier

    Playback Design Dream Amplifier

    SPA-8 Playback Designs Stereo Power Amplifier

    FEATURES

    • ultra-low-noise differential linear-phase input
    • discrete complementary differential class-A input stage
    • discrete complementary class-A voltage amplifier stage
    • class-A pre-driver and driver
    • class-AB bipolar output stage
    • low impedance CFP bias generator
    • latest thermal TRAK technology for ultra-fast and precise bias
    • 20x 200W BJ transistors per channel
    • 2x 1800VA toroidal transformer with electric and magnetic shielding
    • 294000µF capacitors
    • each channel is a standalone processor supervised system (total of four processors)

    SPECS

    • 2x 1600W continuous peak into 4 Ohm
    • 0.00054% THD+N (1kHz, 400W, 8R)
    • 98dB SNR (1W, 8R, 20Hz-22kHz)
    • 860x730x340 (LxBxH[mm])
    • 130kg
  • Quested AP1550-2 Amplifier

    Quested AP1550-2 Amplifier

    Quested AP1550-2 Amplifier

    The 1550W per channel at 4Ω Quested AP1550-2 Channel Class A/B Amplifier is a 2RU 19″ rackmountable amplifier designed for powering passive monitors in recording studios and film production facilities. The amplifier is rated for 1550W per channel at 4Ω and 775W per channel at 8Ω. For I/O, the amplifier features balanced 3-pin XLRs input connectors with advanced sidechain limiting, balanced 3-pin XLR link output connectors for routing the signal to additional amplifiers, and 4-pole Speakon outputs for connecting to studio monitors.

    The AP1550-2 is Quested’s most powerful stereo amplifier deigned to handle large passive monitors delivering exceptional sonic performance.

    Rated at 1500W per channel at 4Ω and 775W per channel at 8Ω, this Class A/B Amplifier is a 2RU 19″ rackmountable amplifier designed for powering passive monitors in recording studios and post production facilities.

    Quested AP1550-2 Connections:
    XLR Inputs
    XLR Link Output on Each Channel
    4-Pole Speakon Outputs
    Sidechain Limiting

    TECHNICAL SPECIFICATION

    Output power (Watts RMS) per channel

    8 ohms @ 1 kHz 775
    4 ohms @ 1 kHz 1500
    2 ohms @ 1 kHz 1800
    Mono Bridged

    8 ohms @ 1 kHz 3000
    4 ohms @ 1 kHz 3600
    THD @ rated power

    4 ohms 1 kHz <0.008%
    20Hz-20 kHz <0.03%
    Input CMRR >90dB

    Hum & Noise -105dB

    Gain +32dB

    Sensitivity for rated output, 4 ohms +3.5dBu (1.2V)

    Damping Factor 1 kHz, 8 ohms >400

    Frequency response 20Hz-20kHz +0/-0.5dB

    Input impedance (actively balanced) 20k ohms

    Dimensions (mm) – 2U 88x482x428

    Weight 23.25kgs

    Power requirement 230 VAC @ 8.0 amps max, 115 VAC @ 16.0 amps max

  • Quested AP750-2 Amplifier

    Quested AP750-2 Amplifier

    Quested AP750-2 Amplifier

    The 750W per channel at 4Ω Quested AP750-2 Channel Class A/B Amplifier is a 2RU 19″ rack-mountable amplifier designed for powering passive monitors in recording studios and film production facilities. The amplifier is rated for 750W per channel at 4Ω and 450W per channel at 8Ω. For I/O, the amplifier features balanced 3-pin XLRs input connectors with advanced sidechain limiting, balanced 3-pin XLR link output connectors for routing the signal to additional amplifiers, and 4-pole Speakon outputs for connecting to studio monitors.

    The Quested AP750-2 is a high ouput 2-Channel amplifier designed to match the critical requirements of passive studio monitoring.

    It’s the perfect choice to drive the Quested H108 and VH2108 passive monitors.

    Features:
    XLR Inputs
    XLR Link Output on Each Channel
    4-Pole Speakon Outputs
    Sidechain Limiting

    TECHNICAL SPECIFICATION

    Output power (Watts RMS) per channel

    8 ohms @ 1 kHz 300
    4 ohms @ 1 kHz 500
    2 ohms @ 1 kHz 700
    Mono Bridged

    8 ohms @ 1 kHz 1000
    4 ohms @ 1 kHz 1380
    THD @ rated power

    4 ohms 1 kHz <0.008%
    20Hz-20 kHz <0.03%
    Input CMRR >90dB

    Hum & Noise -105dB

    Gain +32dB

    Sensitivity for rated output, 4 ohms +3.5dBu (1.2V)

    Damping Factor 1 kHz, 8 ohms >400

    Frequency response 20Hz-20kHz +0/-0.5dB

    Input impedance (actively balanced) 20k ohms

    Dimensions (mm) – 2U 88x482x428

    Weight 16kgs

    Power requirement 230 VAC @ 8.0 amps max, 115 VAC @ 16.0 amps max