Rolls MA258 User manual

Rolls
Brand
Rolls
Model
MA258
Category
Musical Equipment
Type
User manual

Rolls MA258 is a versatile integrated amplifier designed for high-end audiophile speakers and headphone listening. With a built-in RIAA phono preamp and headphone amplifier, it offers a wide range of connectivity options for your audio sources. The MA258 delivers 20 watts RMS of power into 4 ohms, ensuring crystal-clear audio reproduction. Its three selectable stereo inputs—phono, RCA, and 3.5mm—allow you to connect turntables, CD players, smartphones, and more.

Rolls MA258 is a versatile integrated amplifier designed for high-end audiophile speakers and headphone listening. With a built-in RIAA phono preamp and headphone amplifier, it offers a wide range of connectivity options for your audio sources. The MA258 delivers 20 watts RMS of power into 4 ohms, ensuring crystal-clear audio reproduction. Its three selectable stereo inputs—phono, RCA, and 3.5mm—allow you to connect turntables, CD players, smartphones, and more.

MA258
Integrated Amplier with
RIAA Phono preamp
and Headphone Amp
Connection guide
Salt Lake City, Utah
3/18
• Integrated Amplier
• Built in Headphone Amplier
• Low noise, ecient operation
• Small compact size
• Class D high eciency amp
WARNING: THE MINIMUM SPEAKER IMPEDANCE IS 4
OHMS.
CH 4
CH 1
CH 2
CH 3CH 4
LEVEL
LEVEL
LEVEL
LEVEL
PS12
CLASS AMP
5 + 5 WATT MIX/AMP
LEFT
RIGHT
MA251
3.5mm
STEREO
+
+
-
-
BOTH OUTPUTS MUST BE USED
PHANTOM
CH 1
INPUT
CH 2
INPUT
CH 3
INPUT
POWER
LINE
OUT
ON - OFF
CH 2
MONO
INPUT
MUTE
R
R
R
L
L
L
IN 1
VOLUME
BASS
MA258
MADE IN USA
0 10
www.rolls.com
HEADPHONE
PWR
SELECTOR
TREBLE
INPUT
CH2
PHONO
CH1
PS24
LEFT
RIGHT
+
+
-
-
SPEAKER OUTPUTS
+
-
MA258
PHONO
IN 2
ROLLS
-
+
-
+
SPECIFICATIONS:
Line Input Impedance: 10K Ohms
Power Output: 20 Watts RMS (4 Ohms)
Voltage Gain: 30 dB Line
Maximum Supply Voltage: 24 VDC
THD: .05% typical
EIN: 3 mV
Eciency: 85%
Input Sensitivity: 28 mV
Bandwidth: 20Hz - 25 kHz +/- 3dB
+Size: 6.75" x 3.5" x 1.5"
Weight: 1.6 lb.
75889 02580
6 4
REAR PANEL
SPEAKER OUTPUT: Push terminals for speaker wire.
PHONO: RCA for connection to a record player
IN 2: RCA stereo input
PS24: For connection to the included power supply.
GROUND POST: Standard phono grounding post.
FRONT PANEL
VOLUME: Adjusts the level of signal.
IN 1: 3.5mm jack: For connection to a phone, music player or computer. TRS
Stereo (left, right and ground).
HEADPHONE: Headphone output jack 3.5mm stereo.
INPUT SELECTOR SWITCH: Selects channel used.
INSPECTION / WARRANTY
1. Unpack and inspect the MA258 box and package.
If obvious physical damage is noticed, contact the carrier immediately to make a
damage claim. We suggest saving the shipping carton and packing materials for
safely transporting the unit in the future.
2. Please visit our web site at www.rolls.com and click on the Register Your War-
ranty Here button.
CH 4
CH 1
CH 2
CH 3CH 4
LEVEL
LEVEL
LEVEL
LEVEL
PS12
CLASS AMP
5 + 5 WATT MIX/AMP
LEFT
RIGHT
MA251
3.5mm
STEREO
+
+
-
-
BOTH OUTPUTS MUST BE USED
PHANTOM
CH 1
INPUT
CH 2
INPUT
CH 3
INPUT
POWER
LINE
OUT
ON - OFF
CH 2
MONO
INPUT
MUTE
R
R
R
L
L
L
IN 1
VOLUME
BASS
MA258
MADE IN USA
0 10
www.rolls.com
HEADPHONE
PWR
SELECTOR
TREBLE
INPUT
CH2
PHONO
CH1
PS24
LEFT
RIGHT
+
+
-
-
SPEAKER OUTPUTS
+
-
MA258
PHONO
IN 2
ROLLS
-
+
-
+
CH 4
CH 1
CH 2
CH 3CH 4
LEVEL
LEVEL
LEVEL
LEVEL
PS12
CLASS AMP
5 + 5 WATT MIX/AMP
LEFT
RIGHT
MA251
3.5mm
STEREO
+
+
-
-
BOTH OUTPUTS MUST BE USED
PHANTOM
CH 1
INPUT
CH 2
INPUT
CH 3
INPUT
POWER
LINE
OUT
ON - OFF
CH 2
MONO
INPUT
MUTE
R
R
R
L
L
L
IN 1
VOLUME
BASS
MA258
MADE IN USA
0 10
www.rolls.com
HEADPHONE
PWR
SELECTOR
TREBLE
INPUT
CH2
PHONO
CH1
PS24
LEFT
RIGHT
+
+
-
-
SPEAKER OUTPUTS
+
-
MA258
PHONO
IN 2
ROLLS
-
+
-
+
INTRODUCTION
Thank you for your purchase of the MA258.The MA258 is intended for high end
audiophile speakers or headphone listening. It has a FR4(V94-0) rated glass
epoxy circuit board, and a powder coated all steel chassis. It is designed to
last. The MA258 is a Integrated Audio Amplier with a RIAA Phono preamp built
in. It has three selectable stereo inputs a phonograph, RCA and a 3.5mm jack
for phones or tablets. The MA258 also has a very well designed headphone
output so it can be used as a stand alone headphone amplier. The MA258 was
designed to have the highest level of sound quality, whether you are using it as a
headphone amp or with speakers. At every design stage we spent a considerable
amount of time focused on one thing, sound quality.
OPERATION
The MA258 was designed to have the highest level of sound quality, whether
you are using it as a headphone amp or with speakers. At every design stage we
spent a considerable amount of time focused on one thing, sound quality.
The inputs and outputs of the MA258 are self explanatory. Plug a signal in, select
the source, and connect to your desired headphones or speakers.
One thing to note about the MA258 is the speakers are the default output. When
you plug Headphones into the headphone jack on the front of the unit. The power
amp section is then completely disconnected from the circuit. Meaning that when
using the Headphone output of the MA258 the unit is only a headphone amplier.
  • Page 1 1
  • Page 2 2

Rolls MA258 User manual

Rolls
Brand
Rolls
Model
MA258
Category
Musical Equipment
Type
User manual

Rolls MA258 is a versatile integrated amplifier designed for high-end audiophile speakers and headphone listening. With a built-in RIAA phono preamp and headphone amplifier, it offers a wide range of connectivity options for your audio sources. The MA258 delivers 20 watts RMS of power into 4 ohms, ensuring crystal-clear audio reproduction. Its three selectable stereo inputs—phono, RCA, and 3.5mm—allow you to connect turntables, CD players, smartphones, and more.

Download PDF
report

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI

Related papers

Other documents