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Head-Fi Amp Guide -- Submissions - Page 4

post #46 of 113

Meier Porta Corda



Measures: 11.8 x 6.5 x 2.3 cm
Weight without battery: 100 gr.
Supply voltage: 6 .. (9) .. 28 Volts DC
Mean current uptake: 5 mA (4 mA LED OFF, 10 mA class-A mode)
Maximal amplification: 17 dB
Output impedance: 0 / 120* Ohm * plus adapter
The unit runs from a single 9V battery and the supply voltage is internally splitted in a +4.5 and a -4.5V powerline (TLE2426 railsplitter).
Alternatively external powersupplies can be connected with supply voltages between 6V and 28V DC.
External noise is removed by LC-filtering of the supply voltage.
The total buffer capacity is nearly 6000 uF to lower the effective battery impedance.
For amplification two single LM6171 opamps are used for maximal sonic performance.(No dual or quad-opamps!)
The high quality potentiometer is custom-made by ALPS and has a build-in ON/OFF switch.
The high quality crossfeed/stereo switch has gold-plated contacts and the 3.5 mm sockets are silver-plated.
Only metal-resistors and high-quality film-capacitors are used (polystyrol, polycarbonate, polyester).
The industrial PC-board has a thick 70um copper layer.

Current Prices see site: http://home.t-online.de/home/meier-audio
post #47 of 113

Meier Corda HA-1



2 headphone outputs (0 Ohm / 120 Ohm output impedance).
Maximum output 12V / 150 mA.
Variable crossfeed filter (stereo, low, medium, high)
Gold-plated input jacks.
Silver plated 1/8" headphone jacks.
Silver plated heavy duty switch.
Alps Blue Potentiometer.
7 Watts toroidal transformer (Talema).
110V and 220V versions available.
Power uptake 4 Watts
Build-in groundloop breaker.
Low impedance electrolytic buffer capacitors (Panasonic).
Polyesterfilm bypass capacitors in the power supply.
Polystyrol and polyester capacitors in the signal path.
Metalfilm resistors in the signal path.
One-sided PCB with 70 um copper.
LM6171 opamps biased into class-A.
Star-grounding.
Ultra short signal paths.
Sturdy aluminium enclosure with anodized front plate (4 mm) and backplate.
Laser engravings.
Weight: 0.6 kg.
Size: 16.5 x 17.0 x 5.7 cm.

Current Prices see site: http://home.t-online.de/home/meier-audio
post #48 of 113

Meier Corda HA-1 MkII



1 headphone output (0 Ohm output impedance).
Maximum output 12V / 250 mA.
Variable crossfeed filter (stereo, low, medium)
Gold-plated input jacks.
Silver plated headphone jack (Neutrik).
Silver plated heavy duty switch (C&K).
Alps Blue Potentiometer.
3.2 Watts toroidal transformer (Talema).
110V and 220V versions available.
Power uptake 3 Watts
Build-in groundloop breaker.
Fast recovery diodes in the power supply.
Low impedance electrolytic buffer capacitors (Panasonic). Total Buffer capacity 11.000 uF.
Polyesterfilm bypass capacitors in the power supply.
Polystyrol and polypropylen capacitors in the signal path.
Metalfilm resistors in the signal path.
One-sided PCB with 70 mm copper.
LM6171 opamps biased into class-A.
BUF634 buffer amplifiers at each output channel.
Star-grounding.
Ultra short signal paths.
Sturdy aluminium enclosure with anodized front plate (6 mm) and backplate.
Laser engravings.
Weight: 0.65 kg.
Size: 11.1 x 17.9 x 5.2 cm.

Current Prices see site: http://home.t-online.de/home/meier-audio
post #49 of 113

Meier Corda HA-2



2 headphone outputs (0 Ohm / 120 Ohm output impedance).
Maximum output 13V / 250 mA.
Variable crossfeed filter (stereo, low, medium)
Gold-plated input jacks.
Silver plated headphone jacks (Neutrik).
Silver plated heavy duty switch (C&K).
Alps Blue Potentiometer.
7 Watts toroidal transformer (Talema).
110V and 220V versions available.
Power uptake 4 Watts
Build-in groundloop breaker.
Schottky rectifying diodes in the power supply.
Double regulated voltage lines.
Low impedance electrolytic buffer capacitors (Panasonic). Total Buffer capacity 21.000 uF.
Polyesterfilm bypass capacitors in the power supply.
Polystyrol and polypropylen capacitors in the signal path.
Metalfilm resistors in the signal path.
Double sided PCB with 70 um copper.
LM6171 opamps biased into class-A using LM334 current sources.
BUF634 buffer amplifiers at each output channel.
Star-grounding.
Ultra short signal paths.
Signal paths and signal path components at the bottom side of the PCB for maximal shielding.
Sturdy aluminium enclosure with anodized front plate (8 mm) and backplate.
Laser engravings.
Weight: 1.1 kg.
Size: 17.3 x 17.9 x 6.2 cm.

Current Prices see site: http://home.t-online.de/home/meier-audio
post #50 of 113

Meier Corda Prehead

/n

2 headphone outputs
( 0/120 Ohm output impedance ).
Maximum output 13V / 800 mA.
Gain switch. Maximum gain factors 8 / 20 dB.
Variable crossfeed filter switch:
4 pairs of inputs.
Input impedance 13 kOhm
1 pair of passive bypass outputs on input pair 4.
1 pair of volume-controlled preamplifier outputs.
Maximum gain factor 8dB.
Gold-plated input jacks.
Silver plated headphone jacks (Neutrik).
Silver and gold plated heavy duty switches
(Lorlin and C&K).
Alps Blue Potentiometer.
25 Watts toroidal transformer (Talema).
110V and 220V versions available.
Power uptake 8 Watts
Build-in mainsfilter (Schaffner).
Build-in groundloop breaker.
Schottky rectifying diodes in the power supply.
Double regulated voltage lines.
Low impedance electrolytic buffer capacitors (Panasonic).
Total Buffer capacity 44.000 uF.
Polyesterfilm bypass capacitors in the power supply.
Polystyrol and polypropylen (Vishay) capacitors in the signal path.
Metalfilm resistors in the signal path.
Double sided PCB with 70 um copper.
LM6171 opamps biased into class-A using LM334 current sources.
3 BUF634 buffer amplifiers at each headphone output channel.
Star-grounding.
Ultra short signal paths.
Signal paths and signal path components at the bottom side of the PCB for maximal shielding.
Sturdy aluminium enclosure with anodized front plate (8 mm and backplate).
Laser engravings.
Weight: 2.4 kg.
Size: 22.4 x 23.1 x 8,4 cm.

Option: AD8610 opamp

Current Prices see site: http://home.t-online.de/home/meier-audio
post #51 of 113

Musical-Fidelity x-can v3



Manufacturer: Musical-Fidelity
Model : X-CAN V3
In production? yes
List price : 250 UKP
Type of amp : 6922 tubes
Portable? no
Power supply : external 12VA
Number of headphone jacks : 1
output : 1 Watt
Jack type : 1/4"
Inputs : 1 (47k)
Housing material : aluminum
Size (dimensions): 88mm(H) x 180mm(W) x 239mm(D)
Weight : 3.2 Kg
post #52 of 113

Naim Headline2 + NAPSC


Amp manufacturer : Naim Audio
Amp name/model : Headline 2
In production? : YES
List price: 675$/NAHA Headline2 ( DIN or RCA version )
Type of amp: Solid State
Power output ( into 8 Ohms ): 560mW/channel
Crossfeed? : NO
Portable?: NO
Power supply : Yes. AC type. Must be used with external power supply.
isupply(215$)/ NAPSC2 (550$) /FlatCap2 (1,250$ ) /HiCap2 (2,150$ )/SuperCap2 ($6,650)
Detachable power cord? : N/A
Number of headphone jacks : 1
Jack output impedance: 8 Ohms to 2 KOhms but prefer to drive high impedance headphones per company's published specs.
Jack type: 1/4"
Inputs: 1

Possible upgrades/upgrade path:
FlatCap2 or HiCap power supply or for real crazies Super-Cap2
• install a chassis mounted DIN connector instead of a provided captive lead for a possible cable rolling

Housing material: Aluminum chassis
Size: 57 x 121 x 187 mm


• Naim Headline2 vs. Gilmore V2 with Grado RS1
post #53 of 113

Gilmore LITE

Amp manufacturer: HeadAmp.com
Amp name/model: Gilmore Lite
In production? (yes/no): Yes
List price (final list price if no longer in production): $249.00
Current "street" price (used only if no longer in production): N/A
Type of amp (solid state/tube/hybrid): Solid State
Stock tubes (only if tubed): N/A
Crossfeed? (yes/no, how many levels): No
Other processors? (yes/no, type, details): No
Portable? (yes/no): No
Power supply (batteries/AC): Elpac Dual Output Wall-Wart
Detachable power cord? (only if AC, yes/no): Yes
Number of headphone jacks: One
Jack output impedance (per jack, if more than one): Zero
Jack output (per jack, if more than one -- include @ #Ohms):
Jack type (mini, 1/4", per jack if more than one): 1/4" Stereo
Inputs (line, etc., how many): 1 Line Input (RCA)
Other outputs (line, pre-amp, speaker, etc., how many): None
Speaker output rating (only if speaker out -- include @ #Ohms): N/A
Possible upgrades/upgrade path (tubes, power supply, electronics, etc.): N/A
Housing material (plastic, steel, aluminum, etc.): Brushed Anodized Aluminum
Size (dimensions): 4x6x1"
Weight: 4lb
post #54 of 113

Gilmore V2

Amp manufacturer: HeadAmp.com
Amp name/model: Gilmore V2
In production? (yes/no): Yes
List price (final list price if no longer in production): $549.00
Current "street" price (used only if no longer in production): N/A
Type of amp (solid state/tube/hybrid): Solid State
Stock tubes (only if tubed): N/A
Crossfeed? (yes/no, how many levels): No
Other processors? (yes/no, type, details): No
Portable? (yes/no): No
Power supply (batteries/AC): AC - Regulated, Dual-Tracking Design
Detachable power cord? (only if AC, yes/no): Yes
Number of headphone jacks: 2
Jack output impedance (per jack, if more than one): Zero
Jack output (per jack, if more than one -- include @ #Ohms): Zero
Jack type (mini, 1/4", per jack if more than one): 1/4" Stereo
Inputs (line, etc., how many): 2 Line Inputs (RCA)
Other outputs (line, pre-amp, speaker, etc., how many): 1 Pre-Out (RCA)
Speaker output rating (only if speaker out -- include @ #Ohms): N/A
Possible upgrades/upgrade path (tubes, power supply, electronics, etc.): N/A
Housing material (plastic, steel, aluminum, etc.): Brushed Anodized Aluminum
Size (dimensions): 8x8x2"
Weight: 5lb
post #55 of 113

Gilmore V2-SE

Amp manufacturer: HeadAmp.com
Amp name/model: Gilmore V2-SE
In production? (yes/no): Yes
List price (final list price if no longer in production): $849.00
Current "street" price (used only if no longer in production): N/A
Type of amp (solid state/tube/hybrid): Solid State
Stock tubes (only if tubed): N/A
Crossfeed? (yes/no, how many levels): No
Other processors? (yes/no, type, details): No
Portable? (yes/no): No
Power supply (batteries/AC): AC - Regulated, Dual-Tracking Design
Detachable power cord? (only if AC, yes/no): Yes
Number of headphone jacks: 2
Jack output impedance (per jack, if more than one): Zero
Jack output (per jack, if more than one -- include @ #Ohms): Zero
Jack type (mini, 1/4", per jack if more than one): 1/4" Stereo
Inputs (line, etc., how many): 3 Line Inputs (RCA)
Other outputs (line, pre-amp, speaker, etc., how many): 1 Active Pre-Out, 1 Passive Pre-Out, 1 Loop Out (All RCA)
Speaker output rating (only if speaker out -- include @ #Ohms): N/A
Possible upgrades/upgrade path (tubes, power supply, electronics, etc.): N/A
Housing material (plastic, steel, aluminum, etc.): Brushed Anodized Aluminum
Size (dimensions): 8x10x3.5"
Weight: 7lb
post #56 of 113

HeadRoom 2003 Total Airhead

2003/2004 HeadRoom Total Airhead



Amp manufacturer: HeadRoom Corp.
Amp name/model: New 2003 Total Airhead
In production?: Yes
List price (final list price if no longer in production): $199.00
Type of amp: Solid State
Other Features: Power LED, Clipping indicator LED
Crossfeed?: Yes, single level processor
Other processors?: No
Portable?: Yes
Power supply: 4 x AAA batteries (w/ DC input jack)
Number of headphone jacks: 2
Jack type: 3.5mm (1/8" mini)
Inputs: Single Line Inputs (3.5mm)
Housing material: Plastic with rubber battery door
Size: 2.875" (7.3 cm) wide, 1" (2.5 cm) high, and 4.125" (10.5 cm) deep
Weight: 5 ounces (w/o batteries)
post #57 of 113
Pictures of amp:










Amp manufacturer Grace Design
Amp name/model Model 901
In production? (yes/no) Yes
List price (final list price if no longer in production) $1495.00 USD
Current "street" price (used only if no longer in production) $1199.00 - $1395.00 USD
Type of amp (solid state/tube/hybrid) Solid State, Bi-Polar Class A Output, Class B Input
Stock tubes (only if tubed) n/a
Crossfeed? (yes/no, how many levels) No
Other processors? (yes/no, type, details) Built in DAC, Crystal CS43122, 24bit 32k to 96K
Portable? (yes/no) No
Power supply (batteries/AC) AC, Linear Regulated, Toroidal, 115VAC 0.16A, 230VAC 0.08A
Detachable power cord? (only if AC, yes/no) Yes, IEC
Number of headphone jacks 2
Jack output impedance (per jack, if more than one) 1Ohm
Jack output (per jack, if more than one -- include @ #Ohms)
Jack type (mini, 1/4", per jack if more than one) 1/4"
Inputs (line, etc., how many) 40K Ohms balanced XLR, 20K Ohms unbalanced RCA, coaxial SPDIF, optical, and AES3
Other outputs (line, pre-amp, speaker, etc., how many) n/a
Speaker output rating (only if speaker out -- include @ #Ohms) n/a
Possible upgrades/upgrade path (tubes, power supply, electronics, etc.) internal DAC board
Housing material (plastic, steel, aluminum, etc.) Machined Aluminum and Clear coated Front Beze, Powder Coated Folded Steel Chassis
Size (dimensions) 8.5" x 8.5" x 1.7"
Weight 5.8 lbs
post #58 of 113

OPERA AUDIO - Consonance Cyber 20



In production? yes
List price : 700$
Type of amp : Tube SE / EL84x2,12AU7x1
Portable? no
Power supply : Separate
Number of headphone jacks : 2 (10 Ohm /600 Ohm)
Jack type : 1/4"
output : 1 Watt
Distortion at 1W: < 0.4%
Inputs : 1 (100k)/900mv
Consumption: 26W
Size (dimensions): 112mm(H) x 145mm(W) x 190mm(D)
Weight :
post #59 of 113

cMOY based MINT

Amp manufacturer: Eyevancsu (head-fi member)
http://www.Ebay.com
Amp name/model: CMoy/ Tangent Mint
In production? yes
List price: $69.95 Buy It now Ebay
Type of amp: Solid State
Power supply: 9v Battery
Number of headphone jacks: 1
Jack type: 1/8" mini
Controls: volume, on/off switch
Portable: Very much so
Inputs: 1/8" Line-in
Other outputs: None
Housing material: Tin
Size: ~ 2.5"x5"
Opamp: OPA2132P
Capacitors: 2 x 470uf, 2 x 1uf input
Potentiometer: 10k
post #60 of 113









Amp manufacturer : Singlepower
Amp name/model : Maestro
In production? (yes/no) : Yes
List price (final list price if no longer in production)
Current "street" price (used only if no longer in production) : $2300 - $3100
Type of amp (solid state/tube/hybrid) : Tube
Stock tubes (only if tubed) : 3 x 6sn7
Crossfeed? (yes/no, how many levels)
Other processors? (yes/no, type, details)
Portable? (yes/no) : No
Power supply (batteries/AC) : AC
Detachable power cord? (only if AC, yes/no) : Yes
Number of headphone jacks : 1 (made to order)
Jack output impedance (per jack, if more than one)
Jack output (per jack, if more than one -- include @ #Ohms)
Jack type (mini, 1/4", per jack if more than one) : 1/4
Inputs (line, etc., how many) : 4 RCA inputs
Other outputs (line, pre-amp, speaker, etc., how many) : 3 line outputs (pre-amp)
Speaker output rating (only if speaker out -- include @ #Ohms)
Possible upgrades/upgrade path (tubes, power supply, electronics, etc.) : Allready maxed out
Housing material (plastic, steel, aluminum, etc.) : Steel
Size (dimensions)
Weight
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